Here are three of the nominees: Bank robber who called the bank ahead of time to say that he planned to rob them and told them to have the money ready when he got there.
Another crook who murdered a man wrote a novel about it and gave details in the book that only the killer would have known. Police discovered in this guy’s computer that he planned to kill another person to tie in with the next novel he planned to write.
A burglar who fell asleep at the house he was burglarizing.