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?