A Sociopath's Guide to a Successful Marriage is a wickedly funny standalone dark comedy crime thriller by M.K. Oliver. Combining psychological suspense, sharp humor, domestic drama, murder, and an unforgettable antiheroine, this clever novel follows a seemingly perfect wife and mother determined to keep her carefully curated life intact—no matter what it takes. Perfect for fans of My Sister, the Serial Killer, The Maid, How to Kill Your Family, and Yellowface, this darkly entertaining thriller delivers laugh-out-loud moments alongside shocking twists and suspense.

Lalla Rook has a plan for the perfect life. She wants her husband to make partner, her daughter accepted into an elite prep school, and her family settled into their dream home in one of London's most desirable neighborhoods. But maintaining perfection becomes far more complicated after she fatally stabs an intruder in her living room—on the very same day she's hosting a four-year-old's birthday party.

Balancing motherhood, marriage, social expectations, and covering up a body is no small feat, but Lalla is convinced she can handle it all. As suspicions grow, police begin asking difficult questions, and long-buried secrets threaten to resurface, Lalla must rely on her intelligence, resourcefulness, and ruthless determination to protect the life she's built. But every lie creates another problem, and every solution brings her closer to disaster.

A Sociopath's Guide to a Successful Marriage Hardcover – A Darkly Funny Domestic Crime Thriller

Equal parts hilarious and suspenseful, A Sociopath's Guide to a Successful Marriage is a smart psychological thriller filled with razor-sharp wit, unforgettable characters, and deliciously dark twists. Featuring an ambitious antiheroine whose perfectly organized life spins wildly out of control, this standalone novel is ideal for readers who enjoy satirical crime fiction, domestic suspense, and morally complex protagonists.

Product Details

Title: A Sociopath's Guide to a Successful Marriage

Author: M.K. Oliver

Format: Hardcover

Series: Standalone Novel

Genre:

• Psychological Thriller
• Crime Fiction
• Dark Comedy
• Domestic Thriller
• Mystery

Pages: 384

Dimensions: 1.42 x 9.06 x 6.3 inches

Publication Date: February 17, 2026

Features:

• Standalone psychological thriller
• Dark comedy
• Female antihero
• Domestic suspense
• Crime fiction
• Murder mystery
• Family secrets
• Twisty suspense
• Satirical humor
• Book club favorite

Author Biography

M.K. Oliver is a former English teacher and headteacher from Liverpool, England. After many years working in education, Oliver pursued a lifelong passion for storytelling by studying creative writing through programs at Curtis Brown, Faber & Faber, and the Royal Court Theatre. A Sociopath's Guide to a Successful Marriage is a sharply written, darkly humorous crime novel that showcases Oliver's distinctive voice and talent for creating unforgettable characters. Oliver lives in North London with family and a very talkative cat.