Review and Rating - My Sister is Going to Kill Me by Nina Simon
Updated: Oct 6
My Sister is Going to Kill Me
Nina Simon
Copyright 2026
337 Pages
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Well folks, it’s been a minute since we’ve had a sister‑sister crime‑solving duo, and this one delivered the kind of wilderness chaos that makes you grateful your own family vacations involve air‑conditioning. A bunch of rich people “roughing it” on a Grand Canyon retreat? Obviously that was never going to end with matching friendship bracelets.
In My Sister Is Going to Kill Me, a one‑way hike and rafting trip becomes the backdrop for cliffs, rapids, murder, and a skincare launch that goes off the rails faster than the raft itself. Babette, the glamorous founder of Carefree, invites her inner circle to commune with nature… then promptly fails to show up for her dramatic entrance. Tensions spike, motives bubble up, and bodies start appearing where only cacti should be.
Liv and Mandy step up — Liv with her profiler precision, Mandy with her “truth is optional” energy — and together they try to untangle a mess of secrets, motives, and canyon‑level drama. Every character felt like a viable suspect at some point, which I loved. And the killer? Didn’t see that one coming.
As the group barrels down the river, secrets spill, selfish motives collide, and every twist reminds you this retreat was doomed the moment someone said “team‑building.” I genuinely suspected every character at one point, and the final reveal still blindsided me. It’s a wildly open take on a closed‑door mystery, refreshingly messy and fun.
I landed at 3 stars — I enjoyed the ride, but I never had that moment where I clutched the book and yelled “Scuse me, WHAT?!” The twists were twisty, but it didn’t quite give me the gasp‑out‑loud moment I crave.
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