Secrets are leaking left, right and center, but which high-ranking official is the traitor? Only the butler knows. Appearing in a dazzling array of disguises, Steed enrolls at a butler training school, while Emma chases after a skirt-chaser!

A series of "innocent" practical jokes is disrupting foreign relations. When the jokes turn deadly, our Dynamic Duo discover the dastardly doings of an exclusive period club that is planning a political coup.

Steed investigates the alleged suicide of a college instructor and discovers that the weapon the man used to kill himself was a pistol with a silencer attached.

[A school of ballroom dancing] recruits lonely bachelors as students and then bumps them off at graduation and replaces each with a foreign agent. Steed enrolls as a client. Mrs. Peel gets a job as instructor. Clues include a rose tattoo and a garlic sausage ...

Steed and Mrs. Peel find that one of their colleagues has disappeared while playing golf. Investigating the club and its management, they find that there have been several other disappearances, all at the 13th hole ...

When Steed returns home early from a holiday, he finds Mrs. Peel replaced by an actress, Georgie Price-Jones. Subsequently everyone involved in the hiring of Georgie is stabbed to death with double-O knitting needles. It seems the real Mrs. Peel has become Lot 17 of 'Art Incorporated', an organization which prides itself on being able to obtain any object for any one as long as the price is right.

A man dressed in tropical clothes is found in Hertfortshire with an Kalayan arrow in his back. He has then fallen into a coma, yet there is no poison to be detected. All clues lead to an delusional Colonel living close by in a simulated tropical climate as if he were still serving in Kalaya. While Emma watches over an increasing number of comatose men, 'Mayor' Steed is invited into the Colonel's officers club with open arms, but is not allowed to leave.

Dr. Wadkin, one of 7 scientist who have disappeared over the last year, suddenly reappears and attacks his Chinese wife. Steed and Peel find out that all of the missing scientist stayed at room 621 of the Chessman hotel before they vanished. Against her will, Emma poses as a receptionist while Steed pretends to be the famous food critic, M. Gourmet.