Filmed in December 1966, this enjoyable episode from the initial season shot in colour (number five) of The Avengers is a well directed and adroitly performed affair, in addition to being one of the most favoured from the entire series with Avenger devotees, due in large part to its link with another popular medium, that of comic books, and additionally for being the source of the "EEE-URP" outcry that has become an oral signature distinguishing fans of secret agents John Steed and Mrs. (Emma) Peel. Each session of Season number five is noted for its cleverly inscribed "Mrs. Peel, we're needed", an announcement that directly followed the episode title, in this instance appearing within a corner of a canvas upon which an artistic Emma (Diana Rigg) is daubing. Steed (Patrick Macnee) then describes the mystery to which the two must find a solution: several obviously related killings of prominent business executives under bizarre circumstances. Corpses continue to appear with regularity, and it becomes a matter of great urgency that the pair of Avengers renew their polished means of detection in order to send death upon a holiday. Esteemed British cartoonist Frank Bellamy created panels for the storyline that dramatically segue into live action, while tribute is made to the contemporaneous United States based comic book and television hero, Batman, and included is some purloined Batman themed riffing within the Laurie Johnson score. Since a comic book featuring "The Winged Avenger" is conveniently discarded near one of the homicide victims, the connection is clear. As is generally the case with Avengers films, magnificent estates serve as scenario settings; for this chapter, Stanmore Hall in South Shropshire, as well as High Canons in Well End, near Saint Alban's in Hertfordshire. John Steed's quarters, at "3 Stable Mews", also placed in Hertfordshire, hosts a good deal of the planning for Avenger strategy. A top-flight performance from Rigg gains for her the acting laurels here, as is her custom, she ad libs to good effect, and treats viewers to her fetching Head Upon A Steed Shoulder at one point. Albeit that continuity is inconsistent, the climactic moments, when the Forces of Evil face defeat, are of above Avengers standard quality, and the duo's battle cry is born herein: EEE-URP!