S1·E28 The Case of the Jolly Hangman
Aired May 9, 1955
Synopsis
Jessie Hooper hires Holmes to find her missing husband, William, and -- with the help of Lestrade's cousin MacDougal of Glasgow -- he his found hung -- like his grandfather. A rope salesman's laugh is the key clue. It is ironically the window that William never returned to repair that traps villain by his tie.