Don't know the name of this film so i'm going to describe it and hopefully you can tell me what film it is.
It's about a man in jail and one day an elderly man below him comes up through the floor, believing that it was the way out. They make friends and over many years they start building a hole though the wall in an attempt to escape. However one day the old man is crushed in the hole and has to be chucked into the sea in a body bag, however the man actually gets into the body bag and that is how he escapes. I think he then goes on to be very powerful but I can't remember that much. I just remember enjoying the film. Any help would be appreciated