This synopsis is based upon the Big Finish audio adaptation of the original television script. The original episode’s master tape is lost and presumed destroyed. This audio adaptation can be found in Volume 1 of Big Finish’s The Avengers: The Lost Episodes series.
Dr. David Keel, just days away from getting married, has his life thrown into chaos when his bride-to-be is the target of an organized crime hit. Feeling that Scotland Yard isn’t doing enough to solve the murder, Keel decides to take on some amateur sleuthing, but when he discovers that heroin is involved, he realizes this is bigger than him. A mysterious man in a bowler hat is waiting for Keel in his flat when he returns home, but not to kill him. Instead, the man offers to help Keel bring the killer to justice…but he needs Keel to act undercover and become part of the heroin trade. If Dr. Keel can’t bring himself to trust this stranger, he may never identify the murderer.
teleplay by Ray Rigby
story by Patrick Brawn
directed by Don Leaver
music by Johnny Dankworth
Big Finish audio adaptation written by John Dorney
Big Finish audio adaptation directed by Ken Bentley
Big Finish audio adaptation music by Toby Hrycek-Robinson
Original television cast: Ian Hendry (Dr. Keel), Patrick Macnee (John Steed), Philip Stone (Dr. Tredding), Katherine Woodville (Peggy), Alister Williamson (Superintendent Wilson), Godfrey Quigley (Spicer), Charles Wade (Johnson), Murray Melvin (Charlie), Moira Redmond (Stella), June Monkhouse (Mrs. Simpson), Astor Sklair (Sergeant Rogers)
Big Finish audio cast: Anthony Howell (Dr. Keel), Julian Wadham (John Steed), Lucy Briggs-Owen (Carol Wilson), Colin Baker (Dr. Tredding), Camilla Power (Peggy), Tim Bentinck (Superintendent Wilson), Adrian Lukis (Spicer/Johnson), Phil Mulryne (Big Man), Blake Ritson (Charlie), Anjella Mackintosh (Stella/Mrs. Simpson), Kieran Bew (Sergeant Rogers)
LogBook entry by Earl Green