The new thrilling novel by the bestselling author of The Chalk Man and The Burning Girls. Nominated for the ITW THRILLER award Book of the year for Esquire An overturned bus full of students. All of them trapped. A stationary cable car full of strangers. One of them dead. An isolated chalet where friends become enemies after a while. Outside, the snowstorm rages. Within each group, a killer lurks. But that's not their only problem. Why is no one coming to rescue them? What are they trying to escape from? And who are the terrifying Whistlers? They wrote about the author and the book: "The female Stephen King of Britain." –Daily Mail "A chilling, terror-drenched delight." –Observer "C.J. Tudor is unbeatable." –Lee Child "The stormiest thriller of the year is three thrillers in one. Buckle up." –Linwood Barclay "A truly chilling, icy horror story from the master of the macabre." –Chris Whitaker "An author at her peak." –Claire Douglas "C.J. Tudor is amazing." –Harlan Coben