51 pages 1-hour read

The Summer Guests

Fiction | Novel | Adult | Published in 2025

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Character Analysis

Maggie Bird

Content Warning: This section of the guide includes discussion of mental illness, illness, death, substance use, and gender discrimination.


Maggie Bird is one of the main protagonists in The Summer Guests. As an elderly woman who investigates crimes, she is similar to other famous elderly female fictional detectives like Agatha Christie’s Miss Marple and Jessica Fletcher in Murder She Wrote. However, unlike those amateur detectives, Maggie Bird has a background as a CIA agent that she uses to inform her investigation into the disappearance of Zoe Conover.


Maggie is both empowered and haunted by her past life as a CIA agent. As author Teri Gerritsen explained in an interview, “I wanted to show a damaged woman” (Carlson, Mindy. “How Do You Spell Spy? N-E-I-G-H-B-O-R.” The Big Thrill). Maggie was badly hurt by “her brief and tragic marriage to Danny” (210), a doctor she married who never knew about her true identity as a CIA agent, as explained in the first book in the series, The Spy Coast. This experience has left her “wary” of entering a new relationship with her fellow Martini Club member Declan Rose. Despite these emotional scars, Maggie’s experience is invaluable when it comes to investigating Zoe’s disappearance. She realizes quickly, for example, that the blood in Luther’s car may be Zoe’s menstrual blood and is able to point Jo in that direction to exonerate her friend Luther. Though she tells Jo she “had a hunch” about the source of the blood (142), this hunch is the fruit of years of experience gathering information.


Maggie is distinctly aware of her advancing age and the assumptions people make about elderly women. She plays on this ageism and sexism, noting that people “overlook” elderly women, but “when you can work unseen, much can be accomplished” (125). She uses this power to enter Julian Bass’s apartment building, telling Declan that no one will “even notice” her and that this is her “superpower.” Anyone who sees her entering the building disguised as a DoorDash deliverer will “no doubt assume she [is] just a clueless granny hard up for cash” (183). This strategy adds another layer of complexity to the novel’s exploration of the Difference Between Appearances and Reality, revealing how perception shapes appearance and how this can be weaponized.


Maggie is first brought into the kidnapping investigation at the request of her friend Luther Yount, who is a suspect. Maggie and Luther became loyal friends after Maggie saved the life of Luther’s granddaughter, Cassie, in The Spy Coast. In helping Luther, Maggie demonstrates her fierce loyalty to her friend, even as she worries that she is losing her edge for trusting him so implicitly. These doubts illustrate the toll that life as a secret agent takes on one’s personal relationships and view of the world.


Even after Luther is released, Maggie stays involved in the investigation, partly to assist Police Chief Jo Thibodeau, and partly out of a sense of curiosity and boredom with retired life. Although Jo and Maggie occasionally clash, Maggie has enormous respect for the young police chief. Maggie sees “a younger version of herself [in Jo], with the same determination, the same streak of stubbornness” (61). Due to these similarities, Maggie and Jo work well together as an (unofficial) team.

Police Chief Jo Thibodeau

Police Chief Jo Thibodeau is the local police chief. She is a largely flat protagonist who leads the investigation into Zoe Conover’s disappearance. Jo is a Purity, Maine, local with “a square jaw and a direct gaze and the unadorned face of a sturdy Maine girl” (307). Her frank, no-nonsense appearance reflects her personality. Jo is highly dedicated to her work and makes little time for socializing. Indeed, she does not even make much time for meals. As Maggie wryly notes when Jo eats some tempting mortadella, “No delicate nibbling for her; the girl really must have been starved” (143). Jo’s father, Owen, lives in Purity as well, and her brother, Finn, is a diver with the Maine Warden Service. Jo uses her deep ties to the local community to gather information about the case.


At the beginning of the novel, Jo is the acting police chief of Purity. As the title implies, she is relatively new to the role. She is acutely aware of “the weight of the community’s safety resting entirely on her shoulders” (38). That it is unusual for a relatively young woman to be a police chief adds pressure, and the dismissive attitude of arrogant Maine State Detective Alfond illustrates some of the attitudes with which young women in traditionally male jobs have to contest. Maggie notes, for instance, that Detective Alfond acts “as if [Jo] were his secretary and not the town’s acting chief of police” (125), suggesting that he has mentally cast her in a more conventionally feminine role.


Jo’s work on the case solidifies her reputation, and by the end of the novel, Jo is officially given the role of police chief. When Jo arrives for dinner to let the Martini Club know the good news, she is out of uniform. Maggie is “struck” by “how rarely she saw the young woman in civilian clothing” (314), a final indication of how dedicated Jo is to her work.

Reuben Tarkin

Reuben Tarkin is a middle-aged man who lives across Maiden Pond from the Conover family. Reuben is a complex figure whose story illustrates the themes of the difference between appearances and reality and Tensions Between Upper and Lower Classes. Reuben comes “from a long line of Mainers” but has had a difficult life since his father (251), Sam Tarkin, died after a psychotic episode that led to the death of five people, including a police officer. People like George Conover insinuated that Reuben was “insane” like his father, and he was subsequently ostracized. Reuben has spent his entire life in a humble home caring for his elderly mother until her recent death as well as acting as “sole caregiver” for his sister, who uses a wheelchair due to a spiral tumor. Moreover, Reuben knows that his father’s psychotic episode was the result of drugs given to him as part of the MKUltra experiment, though a hush-money agreement has prevented him from speaking out on the matter. The weight of carrying this secret for decades, as well as the difficult circumstances of his home life, makes Reuben angry and resentful of Purity’s wealthy residents generally and the Conovers in particular. As Jo notes, “No wonder he often seemed in a foul mood, […] who wouldn’t be?” (164) Reuben takes out his anger at those involved in his father’s death with minor acts of vandalism and sabotage, as when he drills a hole in George Conover’s canoe.


However, Reuben is revealed to have a softer side as well. He is deeply touched by the kindness that the Conovers’ nanny, Anna, shows toward him and brings her flowers to show his appreciation. He also intervenes to save Susan’s life when he sees Brooke and Kit drowning her. Although he appears gruff and surly, Reuben proves to be essentially moral and even sensitive. At the end of the novel, he symbolically drops a bouquet of flowers he picked himself in the lake near the dock where he last saw Anna as his own personal memorial. This moment, illustrative of his sensitivity and thoughtfulness, is the last in the novel, ensuring it is what sticks in readers’ minds.

Susan Conover

Susan Conover is the mother of the missing girl, Zoe Conover. Her character arc centers heavily on this storyline, such that much of her characterization paints her simply as a mother frantic about the whereabouts of her daughter. However, she is also a point of tension within the Conover family dynamic, as she is an outsider coming into their world. Moreover, as a point-of-view character, she provides insight into the cloistered, traditional environment of the Conover family.


Susan has been married to Ethan Conover, a novelist and college writing instructor, for the past two years. She is dedicated to her only daughter, Zoe Conover, a sweet and talented 13-year-old girl. Susan, a school nurse, feels on edge around Ethan’s patrician family, especially his snobby mother, Elizabeth, and his wealthy brother, Colin. Her anxiety tips over to frustration when “no one seem[s] at all concerned that it [is] seven o’clock and Zoe [has] not come home” (32). Despite their indifference, Susan advocates endlessly for her daughter and involves the authorities, even as it puts her directly at odds with Elizabeth, who accuses her of not understanding the importance of keeping such things within the family. This shows the strength of Susan’s concern for her daughter and develops the novel’s contrasting examples of The Protection of Family Members and Family Loyalty. Susan’s final thoughts while drowning are of her love for her daughter, further illustrating her care for and fierce attachment to Zoe.


Zoe’s disappearance puts a strain on Susan’s relationship with her husband, Ethan. Susan is frustrated with his lack of attentiveness to Zoe’s whereabouts on the day she went missing. She is also horrified when she believes he is writing about her disappearance. However, although they argue, they reunite after their ordeal. Ethan “grasp[s] her hand and presse[s] it to his lips” in agreement that they will never return to Moonview cottage (321)—a promise that implies any tensions in the marriage reflect the influence of Ethan’s family.

The Martini Club

The Martini Club is a rowdy “book club” of retired CIA agents who serve as Maggie Bird’s investigative team. In The Summer Guests, the Martini Club members act as stock characters, but their backstories feature more strongly in the first book in the series, The Spy Coast.


Declan Rose is Maggie’s closest friend. Over the course of The Summer Guests, Maggie and Declan go from friends to lovers. Although Maggie is initially hesitant, she ultimately gives in to her desire for him. After Declan breaks his leg climbing a tree to collect evidence, he stays at her house and she cares for him, showing the intimacy of their relationship. He is also protective of her; he is reluctant to let her go with Reuben to the cottage where the experiments on his father took place.


Ben Diamond is a tough, intimidating man who is revealed to have a soft spot for dogs when he adopts Farley Wade’s neglected labrador. He is an expert in video surveillance, and he uses his expertise to set up a surveillance system at the hospital.


Ingrid and Lloyd Slocum are a married couple. Ingrid is a computer expert who uses her expertise to locate Vivian Stillwater’s sister and perform other vital research. Lloyd is a passionate cook who “always pack[s] an emergency sandwich” and loves to feed people (155). Lloyd serves as comic relief in an otherwise somber dramatic novel, while the club in general illustrates the novel’s contention that investigative work is fundamentally a matter of teamwork, each person contributing unique skills and supporting others in their work.

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