My Sister Is Going to Kill Me: A Novel – Nina Simon

"What's a family vacation without a little murder? A high-stakes, family-centered whodunnit through the rapids of the Grand Canyon from the New York Times bestselling author of Mother-Daughter Murder Night!"

Liv and Mandy Chisholm’s yearly sister trip is a sacred tradition—an attempt to stay connected as their lives diverge. Liv, the ever-practical older sister, packs the color-coded itineraries, while Mandy, a free-spirited human tumbleweed, brings the spontaneity.

This year, the sisters embark on a rafting adventure through the breathtaking depths of the Grand Canyon with a group of strangers. But beyond the terrors of whitewater rapids, sibling squabbles, and rogue reptiles, the river carries a dark undercurrent. When a fellow traveler is found dead and another corpse hits the water, the trip flips into a dangerous murder investigation. With every suspect hiding secrets and the river raging around every bend, Liv and Mandy must learn to trust each other to catch a killer before their relationship—and lives—capsize for good.

Key Features & Highlights:

• Author: Nina Simon (New York Times Bestselling Author & Reese’s Book Club Pick)

• Category: Crime & Mystery / Cozy Thriller / Family Drama

• Language: English

• Core Highlights:

  • Fast-paced, locked-room style murder mystery set on a high-adrenaline Grand Canyon rafting trip.

  • Delightful sibling dynamic featuring polar-opposite sisters solving a crime together.

  • Blends humorous family banter, wilderness survival, and suspenseful plot twists.

Useful For: Fans of cozy mysteries, closed-setting thrillers, humorous whodunnits, and readers of authors like Lucy Foley and Nita Prose.