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Warning Signs

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What to expect

Brought to you by Penguin.

You can look for danger. And danger can look for you.

There’s something out there in the darkness.
By morning, bones lie in the snow, picked clean.

Zach knows the moods of the mountains – his mother taught him before she was gone. His father and the other men on the ski weekend think they know better though.

Drinking and boasting, they laugh in the face of the icy conditions.

But Zach understands what danger looks like. Can he survive the wilderness, and all the monsters within it?

© Tracy Sierra 2026 (P) Penguin Audio 2026

Critics Review

Wow, Tracy Sierra has done it again – knife-edge tension and a perfect denouement. Absolutely outstanding
Andrea Mara
Sierra's sharp, evocative writing builds a tension so taut that it had me holding my breath
Monika Kim
Tracy Sierra combines the forces of nature with the evil that men do to write an extraordinary double-whammy of a novel
Linwood Barclay
What a novel! Warning Signs ticks every box for an attention-commanding thriller. Buy it, lock your doors and shut off your phone
Jeffery Deaver
Sierra’s ability to seamlessly fuse a constant thrum of unseen, impending doom, with an aching tenderness that will break your heart is unparalleled
Ashley Tate
An isolated setting and a pulse-pounding fight for survival combine to make Warning Signs a truly stunning novel
Sian Gilbert
The best thriller I have read in a long, long time...atmospheric, full of heart and so nail-bitingly suspenseful that it had me at the edge of my seat from page one
Hildur Knútsdóttir
A taut survival thriller with heart . . . Sierra cranks the tension up, up, up before launching us into a pulse-pounding life-or-death chase
K.T. Nguyen
As breathtaking as an avalanche, Tracy Sierra’s Warning Signs is a perfect mix of inner torment, warped masculinity, evil suspense, and the sublime
Sierra Greer
Terrifying, chilling and emotionally visceral...I found myself holding my breath
Nikki Smith

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