Dial M for Murder (1954)
Blackmail a guilty man to murder your victim and make it like a burglary situation. Invite someone to a party at the time as your alibi. When your plan goes teribly wrong, always have a brilliant plan B.
You're planning a perfect murder. Think about the best way to do it, considering your alibi, weapon, evidence, motive without leaving any suspicion towards you.
Which movie do you think have the most brilliant scenario of a perfect murder or how to get away with it? (whether they're successful or not)