Interestingly enough this only works in countries where the police is allowed to imply they can get punishment lowered by talking to the prosecutor, something t

Interestingly enough this only works in countries where the police is allowed to imply they can get punishment lowered by talking to the prosecutor, something that's impossible in most western countries. It unfortunately has a side effect, the reciprocating "my friend did it" defense works really well in those places - Scandinavia, I'm looking at you. Given two murder suspects, but no witnesses, and no evidence of who actually delivered the final blow, it doesn't matter if both would be covered in the victims blood. As long as they point blame at each other and shut up, chances are they will get away with murder. They would still very likely go to prison of course, but for some "lesser" crime like assault.