Summer on Lilac Island Summary, Characters and Themes
Summer on Lilac Island by Lindsay MacMillan is a heartwarming story that unfolds on the idyllic Mackinac Island, known for its seasonal contrasts and charming atmosphere. The book follows Georgiana “Gigi” Jenkins, who returns to the island to rebuild her life after facing financial and personal setbacks in Los Angeles.
As Gigi reconnects with her mother, Eloise, and other family members, she must confront the complexities of her past, including her fraught relationship with her estranged father. Set against the backdrop of the island’s lively summer, the novel explores themes of love, family dynamics, and personal growth, leading the characters to discover their true desires and a path forward.
Summary
Mackinac Island, a picturesque retreat nestled between Michigan’s upper and lower peninsulas, experiences a dramatic shift each year. During the winter, it is a quiet, snow-covered sanctuary with only a few year-round residents.
But come summer, the island bursts to life, as tourists flock to its historical sites, enjoy outdoor activities, and indulge in its famous fudge. The atmosphere is vibrant, with horse-drawn carriages and bicycles filling the streets, creating a stark contrast to the serene winter months.
Georgiana “Gigi” Jenkins, a woman who has actively avoided the island for ten years, is forced to return after a series of personal and financial troubles. Gigi’s life in Los Angeles has been filled with failed relationships and career setbacks.
After losing her job and running out of money, she agrees to spend the summer with her mother, Eloise, on Mackinac Island. This return is not easy for Gigi, as she feels discomfort and resentment toward her mother’s traditional lifestyle and her mother’s expectations of her.
On the ferry ride to the island, Gigi reflects on her past, including the thirty-four failed relationships she’s had, and the advice from her therapist to analyze her romantic history. During this ride, she meets Clyde MacDougal, a Scottish author who is visiting the island for inspiration.
Their brief conversation sets the tone for the summer, and Clyde offers her insights into high expectations in relationships, leaving Gigi with a lot to think about.
When Gigi arrives on the island, her mother eagerly greets her, already planning a future for her daughter. Eloise, a traditional and somewhat controlling woman, is worried about Gigi’s lack of stability and has concerns about her tumultuous romantic past.
In an effort to “help” Gigi, Eloise has orchestrated a date between her daughter and Dr. Kentwood, the new doctor on the island.
Although Gigi is frustrated by her mother’s constant interference, she agrees to the date, but only to discover that Eloise herself is also being set up with Clyde.
The family dynamics are complicated, and Gigi soon finds herself caught between her mother’s desires and her own conflicting feelings. The tension between Gigi and Eloise deepens as they negotiate the terms of their respective dates, with Gigi agreeing to go along with Eloise’s matchmaking attempts under the condition that her mother also agrees to a date with Clyde.
This back-and-forth negotiation adds some levity to their strained relationship.
As the summer unfolds, Gigi struggles with the pressures placed on her by her mother, but she also begins to confront deeper issues, especially her unresolved feelings towards her father, Gus, who left the family when Gigi was young. Gigi’s relationship with her sister, Rebecca, is also fraught with tension, as Rebecca feels abandoned by their father and jealous of Gigi’s bond with Eloise.
The sisters’ complicated relationship, exacerbated by the ghost of their father’s absence, plays a pivotal role in the ongoing family drama.
The introduction of Clyde into the family dynamic adds an interesting layer to Gigi’s journey. Despite her initial resistance, Gigi begins to realize that she may have misjudged him.
Meanwhile, Eloise becomes more comfortable with her relationship with Clyde, although she’s still unsure about his sincerity, as she grapples with her long-held insecurities about love and her independence.
Throughout the summer, Gigi contemplates making significant changes to her life, including leaving the island to move abroad. Her growing discomfort with the expectations of her family, coupled with her fears of being stuck in the past, makes her question whether staying on the island will allow her to move forward.
As Gigi’s romantic life continues to be influenced by her mother’s meddling, she comes to understand that she must address her own insecurities and face her emotional baggage if she’s ever to build a lasting relationship.
As the days go by, Gigi finds herself becoming more connected to Dr. Kentwood, though she remains unsure about her feelings for him.
Their awkward but slowly evolving relationship becomes an important part of Gigi’s emotional growth over the summer. At the same time, Eloise’s relationship with Clyde continues to progress, and the story reveals that she’s ready to make a difficult decision regarding her future with him.
The summer on Mackinac Island provides Gigi with the opportunity to address the unresolved issues of her past and make peace with her relationships. The island, which is both a place of nostalgia and conflict for Gigi, serves as a backdrop for her transformation.
As the summer winds down, Gigi begins to understand that she must stop running from her past and take control of her future. The personal growth she experiences helps her confront her own fears and desires, ultimately leading to a clearer sense of self.
In the final chapters, Gigi and her family are forced to face the emotional realities of their past. Rebecca, who has been dealing with her own struggles, begins to heal as she finds comfort in her relationship with her husband, Tom.
Gigi’s father, Gus, makes a reappearance on the island, which stirs up unresolved emotions for both sisters. Gus’s return forces Gigi to confront the pain he left behind, and she must decide whether to accept him back into her life or let go of the resentment she’s carried for years.
As the season changes, Eloise’s romantic journey takes a turn, and she ends her relationship with Clyde, choosing to stay on Mackinac Island and focus on her family. Meanwhile, Gigi’s mayoral campaign intensifies, and she grows closer to James, a local doctor, as they begin to develop a deeper connection.
The story ends with the promise of new beginnings for all the characters, as they learn to navigate the complexities of love, family, and personal growth.

Characters
Georgiana “Gigi” Jenkins
Gigi Jenkins is the central figure of Summer on Lilac Island, and her character is a complex blend of vulnerability and strength. At the start of the story, Gigi is navigating the aftermath of a tumultuous personal life, including financial struggles and a series of failed relationships.
Her return to Mackinac Island after ten years is driven by necessity rather than desire, as she seeks refuge at her mother’s home, Eloise’s, hoping to reset her life. Gigi is initially resistant to the pressures of returning to her mother’s world, especially since their relationship is strained, but the summer becomes a journey of self-reflection and confrontation of past issues.
Her character is deeply marked by a fear of commitment, as seen in her avoidance of stable relationships. She has had thirty-four ex-boyfriends, each relationship serving as a temporary escape rather than a lasting connection.
This pattern mirrors her larger issue of avoiding vulnerability, which becomes a central theme in her journey. Through her interactions with various characters, especially Dr. Kentwood and Clyde, Gigi comes to realize that her desire for connection is often overshadowed by her fear of emotional intimacy. Despite her skepticism towards love, she slowly starts questioning her patterns and becomes more open to change.
Gigi’s arc is one of self-discovery, where she faces her insecurities, familial expectations, and romantic hesitations.
Eloise Jenkins
Eloise Jenkins, Gigi’s mother, plays a pivotal role in shaping Gigi’s view of love and relationships. A traditional woman, Eloise has a strong sense of duty and responsibility, particularly toward her family.
Throughout the novel, Eloise is presented as a woman who has been emotionally scarred by the absence of her husband, Gus, and is now facing the complexity of new relationships, especially with Clyde. Her dating life becomes a source of tension between her and Gigi, as Eloise eagerly pushes Gigi toward romantic connections while seeking her own happiness with Clyde.
Eloise’s character is marked by a deep-seated fear of being alone, which sometimes manifests in her attempts to control Gigi’s romantic life, believing that a stable relationship will give her daughter the security she lacks.
Despite her well-meaning interference, Eloise is shown to be conflicted, especially when it comes to her commitment to Clyde. Her engagement with him is called into question as she grapples with her own fears and the pull of family obligations on Mackinac Island.
Eloise’s decision to break up with Clyde at the end of the novel, despite their deep love for each other, illustrates her growth as she realizes that her true happiness lies in remaining close to her family and island life. Through Eloise, the novel explores themes of sacrifice, love, and the complexities of balancing personal desires with familial responsibilities.
Rebecca Jenkins
Rebecca Jenkins, Gigi’s sister, represents a contrasting perspective on family and personal growth. Unlike Gigi, who returns to Mackinac Island with the intention of resetting her life, Rebecca comes back to the island with her own set of challenges, including a pregnancy and unresolved feelings about their father, Gus.
While Gigi has a strained relationship with their father, Rebecca’s struggles are more internal, as she feels alienated from her family and disconnected from her new life in Traverse City. Her pregnancy and the expectations that come with it exacerbate her sense of isolation, though her husband, Tom, provides her with much-needed emotional support.
Rebecca’s character is one of quiet strength, dealing with personal turmoil while trying to navigate the complexities of family life. As the story progresses, Rebecca begins to reconcile with her father, Gus, who has shown signs of wanting to be part of her life again.
Her cautious optimism about her father’s efforts marks a significant moment in her emotional journey, as she begins to let go of past grievances and make peace with her family’s fractured history. Her arc is one of finding balance between her new family life and the emotional baggage of her past.
Clyde MacDougal
Clyde MacDougal, a Scottish author visiting Mackinac Island, becomes an important catalyst in the lives of both Eloise and Gigi. His character is charming, intellectual, and somewhat enigmatic, and his initial encounter with Gigi sets the tone for their later interactions.
Clyde’s character is one of quiet observation and wisdom. His relationship with Eloise begins as a potential romantic connection, but over time, he becomes a more central figure in the lives of the Jenkins women, especially Gigi and Eloise.
While Gigi remains skeptical of Clyde’s sincerity, especially in his interactions with Eloise, he is portrayed as a grounded, thoughtful individual, offering insights into Gigi’s own romantic struggles.
Clyde’s romantic involvement with Eloise is complicated by her emotional baggage and her commitment to her family on Mackinac Island. Despite their deep connection, Eloise ultimately decides to end the relationship, realizing that her obligations to her family and her life on the island are more important to her than pursuing a future with Clyde in Scotland.
His character serves as a contrast to Gigi’s chaotic romantic history, providing a steady presence in the story as he continues to navigate his own feelings of love, loss, and personal growth.
Gus Jenkins
Gus Jenkins, the estranged father of Gigi and Rebecca, is a complex figure whose return to Mackinac Island stirs up unresolved emotions in both of his daughters. Gus’s absence throughout their childhood has left both Gigi and Rebecca with deep feelings of abandonment, though Gigi, in particular, harbors a lot of resentment toward him.
Gus represents a fear of commitment and the inability to settle down, as he continues his nomadic lifestyle, leaving Eloise and their children behind. His character is often frustrating for Gigi, who craves a stable, reliable father figure.
Despite his flaws, Gus’s return to the island forces Gigi to confront her feelings of loss and abandonment, ultimately leading to a moment of compassion as she understands the deeper reasons behind his behavior.
Gus’s inability to fully commit to either Eloise or a stable life reflects his own emotional struggles and fears of intimacy. In his conversations with Gigi, he admits to his own fears but also acknowledges the pain he has caused.
Gus’s journey is one of reconciliation, as he attempts to reconnect with his daughters, though his actions fall short of providing the emotional stability they desire. Through Gus, the novel explores themes of abandonment, the effects of a broken family, and the struggle to come to terms with past mistakes.
Dr. Kentwood
Dr. Kentwood, a local doctor on Mackinac Island, initially serves as a potential romantic interest for Gigi, though their connection is marked by awkwardness and a lack of chemistry.
Dr. Kentwood is the epitome of the “good guy,” which, to Gigi, makes him an unappealing choice for a partner.
Throughout their interactions, he remains courteous and interested in Gigi, but she is resistant to any emotional investment, viewing him as part of her mother’s matchmaking schemes. Despite her initial indifference toward him, Dr. Kentwood becomes a figure who challenges Gigi’s perceptions of love and relationships. His steady, kind nature forces her to confront her own fears of commitment and her patterns of avoiding deeper emotional connections.
Though their relationship doesn’t evolve into a romance, Dr. Kentwood plays a key role in Gigi’s journey toward understanding her own needs and desires.
Themes
Family Dynamics and Relationships
The theme of family dynamics and the complexities of relationships plays a central role in Summer on Lilac Island. Gigi’s return to Mackinac Island forces her to confront her complicated relationship with her mother, Eloise, as well as unresolved issues with her father, Gus.
Eloise’s strict expectations and attempts to manage Gigi’s personal life create a source of tension between them, particularly as Gigi struggles with her mother’s well-meaning but intrusive matchmaking efforts. At the same time, Gigi’s relationship with her father reflects the emotional neglect she has felt throughout her life due to Gus’s nomadic tendencies and inability to commit to a stable life.
Gigi’s emotional struggles and her desire for independence are closely tied to the fractured family dynamic, with her father’s inability to settle down mirroring her own fears about commitment and stability in relationships.
Moreover, the novel also explores the rivalry and strained relationship between Gigi and her sister Rebecca. Despite both sisters facing their own personal challenges, their relationship is marked by jealousy, guilt, and unspoken tensions related to their shared history and their father’s abandonment.
As Gigi works through her personal turmoil, the evolving relationships with her family members serve as a backdrop for her self-discovery, helping her understand not only her own desires but also the deeply ingrained issues that have shaped her life. The novel portrays how unresolved family conflicts can shape individuals’ lives and how confronting them is a necessary step toward personal growth and healing.
The Search for Love and Self-Identity
Gigi’s journey throughout the novel is inextricably linked to her internal search for self-identity and a deeper understanding of love. Having been through a series of failed relationships, Gigi is hesitant to open herself up to love again, as her experiences have led her to question her ability to form meaningful connections.
This emotional hesitation becomes a core aspect of her character, as she both longs for a genuine connection yet fears the vulnerability that comes with it. Her growing connection with Dr. Kentwood, despite initial reservations, serves as a reminder that love can often manifest in unexpected ways, not just in idealized, passionate connections but also through consistent, reliable companionship.
At the same time, Gigi’s complex feelings toward her mother’s romantic endeavors, particularly her relationship with Clyde, highlight the conflicting emotions she has about love. Gigi’s resistance to her mother’s relationship with Clyde reflects her struggles with her own understanding of love and commitment.
She finds herself questioning whether it’s better to follow her mother’s example of prioritizing family or to continue searching for her own version of happiness. The novel portrays the difficulty in reconciling the idea of love with personal growth, as Gigi comes to terms with her past while also learning how to embrace the possibility of a stable, fulfilling future.
This theme underscores the notion that personal growth often comes from facing one’s own insecurities and fears about love and connection.
The Impact of the Past on the Present
The theme of how the past influences the present is explored in depth throughout Summer on Lilac Island, with many of the characters struggling to move forward because of unresolved issues from their earlier lives. Gigi’s complicated history with her father, Gus, serves as a prime example of how the past can create emotional barriers that prevent individuals from forming healthy relationships.
Gus’s erratic behavior and refusal to settle down have left emotional scars on both Gigi and Rebecca, and their ongoing struggles to find closure reflect how the absence of resolution can manifest in unhealthy relationship patterns in adulthood.
Similarly, Eloise’s own past, particularly her troubled marriage to Gus, influences her current relationships and decisions. Her hesitancy to fully embrace her love for Clyde and the weight of her unresolved feelings about her marriage add layers of complexity to her character.
Eloise’s journey toward self-acceptance, as she lets go of her idealized vision of love and family, demonstrates the power of the past in shaping current realities. The narrative reveals how the characters’ past experiences—whether it’s Gigi’s abandonment by her father, Eloise’s emotional struggles, or Rebecca’s feelings of inadequacy—continue to define their decisions and perceptions in the present.
Change and Personal Growth
The theme of change is pervasive throughout the novel, particularly through Gigi’s personal transformation. Initially, Gigi is reluctant to confront her past and even more hesitant to engage with her family dynamics.
However, as the summer progresses, Gigi is forced to face her unresolved issues with her mother, father, and sister, and ultimately begins to embrace change as a means of personal growth. Her involvement in the mayoral campaign and her evolving relationships with the people around her, especially with James and Dr.
Kentwood, symbolize Gigi’s gradual acceptance of new possibilities for her future. The notion of change is not just about Gigi’s transformation but also applies to the island itself, with its seasonal shifts representing the broader theme of cyclical renewal and personal reinvention.
Eloise, too, undergoes significant change as she reevaluates her choices in love and family. Her decision to end her relationship with Clyde despite their deep affection for each other reflects a profound shift in her character.
Eloise chooses to prioritize her family and her own needs over the pursuit of romantic fulfillment, marking a critical turning point in her personal journey. The novel suggests that true growth comes from understanding the complexities of one’s life and making difficult decisions that pave the way for a healthier, more authentic existence.
The Role of Community and Belonging
Mackinac Island, with its vibrant atmosphere and close-knit community, serves as both a literal and metaphorical backdrop for the characters’ journeys. The island represents a place of belonging, where people, despite their personal struggles, find a sense of connection and support.
Gigi’s return to Mackinac Island forces her to confront not only her family’s dynamics but also her place within the island’s larger social fabric. While initially resistant to the idea of settling back into the rhythms of island life, Gigi slowly begins to appreciate the comfort and stability the island provides.
The island’s residents, with their shared history and collective experiences, offer Gigi a sense of community that contrasts sharply with the loneliness she has felt in her previous life. The support from the townspeople, her growing interactions with friends like Alice and Deirdre, and her evolving relationship with her family all contribute to Gigi’s sense of belonging.
The theme of community emphasizes the importance of finding a place where one can feel accepted and loved, highlighting how integral human connections are to emotional healing and personal development. The novel illustrates that sometimes, it is in these familiar, supportive environments that individuals can finally begin to heal and grow.