"Mallory Arnold's Cross My Heart, I Hope You Die is a pulse-pounding thriller with all my favorite elements: a remote location, a cheating boyfriend, fierce female friendships, and a healthy dose of revenge. A dark, satisfying rollercoaster of a read." -- Jennifer Hillier, bestselling author of Things We Do in the Dark

"I absolutely loved this horror-filled, creepy, twisty novel by Mallory Arnold. I went in blind and quickly thought I knew where this was going: a celebration of female friendship, complete with some well-deserved revenge on a cheating boyfriend. Boy, was I wrong. The story shifts from clever to absolutely terrifying, and then spirals into even darker territory. At least I think it does, by then I was reading through my fingers. Sleep with the lights on." -- Natalie Barelli, bestselling author of The Housewife

"A fast-paced ride that had me craving maniacal revenge while it lured me into a ghastly and deliciously creepy turn of events that I was beyond giddy to discover." -- Amy K. Green, author of The Prized Girl and Haven't Killed In Years

"Cross My Heart, I Hope You Die is the perfect blend of addictive, fun, and twisty, all wrapped up in a revenge plot everyone will be cheering for and a terrifying cabin in the mountains. Come for the female rage and a man you will love to hate, stay for the slasher vibes and intense fight for survival" -- Sian Gilbert, author of I Did Warn Her

"Three women sled down a mountain on their ex-boyfriend's corpse. It sounds like the punchline to a morbid joke--but this spine chilling thriller-horror quickly proves otherwise. Through multiple POV narration, fiercely lovable characters, and relentless, breakneck pacing, USA Today bestseller Mallory Arnold delivers a wildly entertaining story about survival, sisterhood, and the brutal lengths we'll go to protect the ones we love. I have papercuts!" -- Hannah Morrissey, USA Today bestselling author of The Unlucky Ones

"Jason is the ultimate confidence trickster, a love bomber, a 'Dirty John' on steroids. So, do I cheer when he's found dead in an isolated cabin? You bet I do. In the face of adversity, Jason's exes Nora, Ruby, and Cham choose to join forces, to rise to every challenge. There will be no shrinking like violets from these three.

Mallory Arnold's Cross My Heart, I Hope You Die is a disturbing, intense, heart-pounding ride. If you like your mysteries served with a healthy sauce of gore and a pinch of humor, you'll turn the last page of this novel feeling sated." -- KD Aldyn, author of Sister, Butcher, Sister

Publisher: Poisoned Pen Press

Pub date: 2026-07-14

Length: 352 pages