My Sister Is Going to Kill Me

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A01=Nina Simon
amateur sleuth
amateur sleuthamateur sleuth
Author_Nina Simon
bestselling author
boat trip
books about sisters
books about women
Category=FB
Category=FBA
Category=FF
Category=FFD
Category=FFS
Category=FS
crime
eq_bestseller
eq_crime
eq_fiction
eq_isMigrated=1
eq_isMigrated=2
eq_modern-contemporary
eq_nobargain
family
family life
female
forthcoming
fun
grand canyon
group trip
isolated
locked room
mother daughter murder night
murder
murder mystery
murder night
new nina simon book
new york times bestseller
next nina simon
nina simon
raft
rafting
siblings
sisters
strong female lead
suspicion
thrillers about sisters
thrillers about women
trapped
two sisters
whodunnit
wilderness
woman
women

Product details

  • ISBN 9780063478022
  • Weight: 646g
  • Dimensions: 152 x 229mm
  • Publication Date: 10 Sep 2026
  • Publisher: HarperCollins Publishers Inc
  • Publication City/Country: US
  • Product Form: Hardback
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From the New York Times bestselling author of the runaway hit Mother-Daughter Murder Night, a Reese’s Book Club pick, comes another fun, family-centered whodunnit about two sisters who work together to find a killer as they raft down the rapids of the Grand Canyon.

What's a family vacation without a little murder?

Liv and Mandy Chisholm’s yearly sister trip is a sacred tradition, an attempt to bond as their lives increasingly diverge. Liv, the ever-practical older sister, packs the color-coded itineraries. Mandy, a bedazzled human tumbleweed, brings the spontaneity.

This year, the sisters take off for 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 ferocious beauty of the river carries a darker undercurrent, and an unexpected guest: a murderer in their midst.

When a fellow traveler is found dead and another corpse hits the water, the rafting trip flips from idyllic sister vacation to high-stakes murder investigation. Every suspect has a secret, every clue is drenched in mystery, and Liv and Mandy can hardly trust each other, let alone their own instincts. With the river raging and danger around every bend, the Chisholm sisters must work together to catch a killer—and keep their relationship from capsizing—before it’s too late.

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