Without Malice (2000)

The kill was an accident, but the cover up made it murder!

Paul Venters is a self-centered plastic surgeon who is soon to be married to beautiful Susan, but doesn't get along very well with his fiancée's family, particularly Susan's brother Marty, an ex-con who is trying to stay clean after beating a nasty drug habit. To appease his future wife, Paul tries to mend fences with Marty by inviting him along for a camping trip in the Canadian wilderness.