by Nina Simon
First published 2026
Liv and Mandy Chisholm step onto their raft for another annual sister trip, this time navigating the Grand Canyon's whitewater rapids with a group of strangers. Liv brings her color-coded itineraries and practical nature. Mandy contributes spontaneity and bedazzled chaos. They hope the adventure will repair their fraying relationship as their lives pull them in different directions. The river delivers more than scenic beauty and sibling tensions. A fellow traveler turns up dead. Another corpse floats downstream. Their vacation transforms into a murder investigation with every passenger hiding secrets and each clue wrapped in deception. The sisters can barely trust each other, let alone their fellow rafters. Rapids rage around every bend while danger closes in from all sides. Liv and Mandy must overcome their differences to identify the killer before more bodies hit the water and their relationship capsizes completely.
Genres: adventure, mystery, adult, adult-fiction, thriller
Vibes: atmospheric, dark, fast-paced, suspenseful, tension-filled
Tropes: forced-proximity, locked-room-mystery, secrets-and-deception, sisters-in-conflict
Setting: Grand Canyon
528 pages · Paperback · William Morrow Large Print
Content warnings: death, murder