> I have a hard time believing anyone would commit a murder on a submarine in Denmark. I feel like it's almost impossible to cover that up. The 'perfect crime'

> I have a hard time believing anyone would commit a murder on a submarine in Denmark. I feel like it's almost impossible to cover that up. The 'perfect crime' doesn't have to leave you above suspicion; but it has to deny sufficient evidence to convict you. You might believe your plan avoided incriminating you to the point that you can plausibly claim that you didn't commit the murder or tried to conceal the evidence. Basically, a psychopath would think they could cover it up.