it takes a thief to catch a thief

it takes a thief to catch a thief

One who is skilled at or experienced in evading the law is better suited than anyone else to catch a fellow criminal. He's a bank robber, he can definitely help us catch these crooks—it takes a thief to catch a thief, you know. Of course you guys wouldn't think up something like this—you're cops. It takes a it takes a thief to catch a thief. Have you guys considered that maybe I could help you find this guy? It takes a thief to catch a thief, so why don't you let me out of this jail cell?

See also: catch, take, thief, to

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