Immediately they should have hidden the money. Then call the police about the body. Then when all the investigating is over split the money. And each goes their own way. Until they meet again all prosperous. But apart from that it was a tight all suspenseful movie. Never undermine anybody! Thing is my way would not have got that guy all messed up. Love the snappy humor. Could they not have chopped the body up together? Done pieces in turns maybe? Share the responsibility. My favorite part was when under questioning the chick was asked whether she remembers people by their faces or names best. And being a nurse she says "diseases". Then the investigator says that just like her he recalls people's behavior by their crimes. I do recommend this movie.
Review of Shallow Grave
