A group of lads go on a fishing trip (I think) for the weekend, they find the dead body of a woman in (or at the side of) the river. It's in the middle of nowhere so they can't get a phone signal to phone the police, they decide to carry on with their fishing trip and let the authorities know when they go back, but end up getting accused of murder, that's about as much as I can remember.
Anyway I want to watch it again but can't think of the name, does anyone know what it is?