Dressed to Kill (The Avengers)

"Dressed to Kill" is the sixth episode of the first series of the British television series The Avengers, originally broadcast on November 2, 1961. It stars Ian Hendry as Dr. David Keel and Patrick Macnee as John Steed. The episode is significant for being the first appearance of John Steed in the series, though his role at this early stage was secondary to that of Dr. Keel.

The plot revolves around a series of murders involving tailors, with a common thread being that all the victims were connected to a particular fashion house. Dr. Keel becomes involved in the investigation when he is called upon to examine one of the bodies. He and Steed uncover a conspiracy involving sabotage and a hidden message sewn into a garment. The title "Dressed to Kill" is a double entendre, referring both to the victims' profession and the deadly nature of the situation. The episode marks the transition of Steed from a supporting character to the co-lead that he would become throughout the series' run.