Haven’t Killed in Years is Amy K. Green’s second thriller, after The Prized Girl (2020)—and it is best read as a character study wearing serial-killer clothes: darkly funny, morally gray, and more interested in what inherited violence does to a personality than in body-count spectacle. The hook is immediate. Gwen Tanner is an almost-too-ordinary Boston-area office worker approaching thirty: a bland job, a one-bedroom apartment, pottery she makes and then destroys, and no close attachments by design. She was born Marin Haggerty.
At nine, her father, Abel Haggerty, was convicted on eight counts of first-degree murder, and her mother, Reanne, went to prison for aiding and abetting. Marin was given a new name and a new life. On the day Reanne is released, a severed arm arrives on Gwen’s doorstep with a note that says, essentially, Hi, Marin. Someone knows who she is, and they are not being subtle about it. That premise is not unprecedented—the children of famous killers are a durable subgenre—but Green’s execution is what sells it. Gwen does not call the police.
She relocates the evidence and starts investigating herself, because anonymity is the only architecture her life has. The investigation pulls her into true-crime tourism, prison-adjacent obsessives, childhood survivors, and a circle of new almost-friends who are also, inconveniently, suspects. The book’s running joke, and its real engine, is that Gwen was desensitized to murder as a child and still talks about it with the same sardonic shrug she applies to office small talk.
Green has said she wanted readers to laugh even while the subject matter includes severed limbs and serial-killer worship; that tone is the book’s signature. Gwen is the whole show. She is messy, defensive, self-aware without being redeemed, and funny in a way that is closer to Jeff Lindsay’s Dexter than to the usual “traumatized but plucky” thriller heroine. She knows her indifference to violence is wrong. She is not proud of it. She hides it the way other people hide a drinking problem.
That combination—moral vacancy plus social competence plus dry wit—makes her easy to follow and hard to trust, which is exactly the right register for a narrator who grew up watching her father kill and then spent twenty years pretending to be furniture. The supporting cast is built as a suspect board that doubles as a social life Gwen never meant to have.
Recurring names in coverage include Porter, a pottery-studio coworker and true-crime enthusiast; Dominic, who runs an Abel Haggerty murder tour and has somehow gotten visiting access to her father; Elyse Abbington, the child who survived the family massacre that finally brought Abel down; plus mother, father, an old detective, an attorney who helped bury Marin’s identity, and a rotating set of murder-curious hangers-on. The relationships are the novel’s secret second plot.
Gwen keeps people at a distance for their safety and hers; the book keeps asking whether opening a door is how you catch a killer or how you become one again. Green is also poking at true-crime culture without delivering a sermon. Serial killers as celebrities, murder tours as date-night entertainment, fans who treat atrocity like fandom lore—Gwen has to walk through that world while being the artifact it is consuming. When the satire works, it is sharp. When it piles on, it starts to feel like the book is collecting types.
Structurally, this is a present-day investigation braided with childhood flashbacks. The flashbacks matter. They are not just “here is how Dad was bad.” They establish that Marin was not a passive witness in the way a conventional victim-narrative would prefer, and they complicate the nature-versus-nurture question the title is already winking at. The present-day plot moves in set pieces: packages, aliases, undercover tour-going, prison approaches, comedies of error that keep flipping who looks guilty.
Green has acknowledged the middle went through major revision; you can still feel the seams of a book that wants both a twisty whodunit and a psychological excavation and a satire of fandom. Around the halfway mark a second plot line drops that many readers describe as a genuine floor-dropper. Whether that bombast feels earned or overcooked depends on your tolerance for thriller engineering. Under the arms-in-boxes plotting, the novel is about identity as a survival skill.
Gwen Tanner is a performance that lasted two decades. The question is not only who is sending the parts? It is how much of Marin is still in there, and whether she ever stopped being her father’s project. Green keeps circling inherited violence, the ethics of disappearing, the difference between not killing and being good, and the lonely competence of someone who learned early that closeness is a liability. There is also an unexpectedly tender strain. Gwen’s isolation is strategic, but it is also grief.
The pottery she destroys is a neat metaphor that would be too on-the-nose if the voice were earnest; because the voice is snide, the image works. Read this if you like thrillers that live in the morally gray zone, narrators who would rather joke than process, and mysteries where the detective is also the exhibit. It will land especially well if Dexter, true-crime-fandom satires, or “the family of the monster” stories are already on your shelf. Skip it if you need a likable heroine, a tight suspect list, or horror that actually horrifies rather than wisecracks past the gore.
