
Release date: February 17, 2026
Publisher: Atria
Genre: Mystery/Thriller
Synopsis:
A whip-smart and darkly funny crime novel—perfect for fans of My Sister, the Serial Killer and The Maid—that follows a wife and mother with a deadly secret that she must suppress if she wants to maintain her picture-perfect façade.
Meet Lalla Rook. Lalla has a lot on her plate: She needs to guarantee her husband makes partner, secure her dream house in Hampstead, and get her daughter into a prestigious prep school. And on the afternoon she stabs a stranger seven times after he breaks into her living room, she has a four-year-old’s birthday party to host.
With an unambitious partner, two demanding children, and a barely adequate large house in a nice (if not quite fashionable) part of town, Lalla’s life isn’t quite perfect yet. And she can’t pretend she hasn’t missed the adrenaline rush that comes with transgressing. Besides, as a wife and mother, she’s already an expert multi-tasker. So, disposing of a body, framing a friend, and being the world’s best mother can easily be managed alongside the usual domestic minutiae.
It’s just that her husband Stephen seems distracted, her daughter’s drowning of the class hamster is affecting her academic future, and then there is the unexpected intruder. Who is this man and what does he want from her? Because Lalla has a past she’d rather keep hidden—and the sudden appearance of the police means that avoiding them will be yet another task to cross off her to-do list.
Funny, calculating, hypercompetent, and ambitious, Lalla is your next favorite antiheroine. Just don’t mention it to her mother-in-law.
Review:
In A Sociopath’s Guide to a Successful Marriage by M. K. Oliver, domestic ambition meets deliciously dark chaos. Lalla Rook is determined to curate the perfect life, the Hampstead house, partner track husband, prestigious prep school acceptance, and she approaches those goals with the same ruthless efficiency she uses to dispose of a body. From the opening shock, the novel makes it clear this is not your typical suburban thriller. It’s satirical, sharp, and wickedly funny, leaning fully into its antiheroine’s skewed logic.
Lalla is manipulative, cunning, and endlessly surprising. I truly never knew what she would do next, and that unpredictability is half the fun. Her behavior is often shocking, sometimes outrageous, but always entertaining. The humor is dark and cheeky, and the tone balances crime with biting social commentary about status, motherhood, and the performance of perfection. It feels both over the top and completely self aware in the best way.
This is a wickedly fun read for anyone who loves morally gray women who refuse to apologize. Lalla isn’t asking for your approval—she’s asking if you’ve RSVP’d to the birthday party she’s hosting… right after handling a minor homicide inconvenience.
Overall rating: 4/5
Thanks to the publisher for my review copy.














