What is a summary of The Sleuths by O Henry?

"The Sleuths" by O. Henry is a short story about two detectives, Shamrock Jolnes and Snap, who are hired to retrieve a stolen diamond necklace. They use their intellect and clever tactics to track down the thief and recover the necklace, only to discover a surprising twist in the end that challenges their abilities. The story highlights the duo's wit and unconventional methods of solving the case.