Quite why anyone would want to take an emotionally damaged woman on anti-depressants on a challenging caving trip is beyond me. You just know given the nature of the film that it's all about to go spectacularly wrong.

It does so with great style and plenty of popcorn spilling shocks.

Sadly for me as the film progresses, it just becomes plain silly. Certainly you might liek to think about dining before the film rather than after it..