Mary Kubica’s 2026 psychological thriller — It’s Not Her — is excellent.

Plenty of twists & turns. Try to guess the killer.

The Crime: Courtney Gray’s peaceful vacation turns into a nightmare when she discovers her brother and sister-in-law brutally murdered in their lakeside cottage. 

The Disappearance: Her teenage niece, Reese, is completely missing from the scene, while her young nephew, Wyatt, is found sleeping upstairs entirely unharmed. 

The Investigation: As local police swarm the remote resort town, dark family secrets and local town history surface.