set-a-thief-to-catch-a-thief

Updated: June 11, 2025

The head detective had known Medhurst for ten years, he said, as a most respectable man, and even a ratepayer; he had always found him the cleverest of spies, as well he might be, indeed, on the familiar set-a-thief-to-catch-a-thief principle. However, the upshot of it all was, as usual nothing.

Grant Allen - An African Millionaire : Episodes in the Life of the Illustrious Colonel Clay