it takes a thief to catch a thief

it takes a thief to catch a thief

One who is skilled at evading the law is well-trained to find or catch someone who behaves similarly. He's a bank robber, he can definitely help us catch these crooks—it takes a thief to catch a thief, you know.
See also: catch, take, thief, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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