The Drift: The spine-chilling 'Waterstones Thriller of The Month' from the author of The Burning Girls

Survival is murder . . .
An overturned coach full of students. All of them are trapped.
An isolated chalet full of friends. Soon they'll be enemies.
A stranded cable car full of strangers. One of them is dead.

Outside, a snowstorm rages.
Inside each group, a killer lurks.
But that's not their only problem.

Why is no rescue coming? What are they trying to escape from? And who are the terrifying Whistlers?