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’s life has become dangerous. Having already helped his mysterious benefactor break up a dangerous drug ring, he has found himself entangled in a new world, trying to bring his fiancee’s killers to justice, even at the cost of the orderly operation of his own practice. But Keel’s mystery man does at least now have a name – John Steed – but everything else about him remains unknown. Steed has another job for Keel, putting Keel’s life in danger as he delves into the world of organized crime once again. But this time, Steed promises the payoff for which Keel has been waiting: the chance to lock up the man who killed his fiancee.
teleplay by Brian Clemens
story by Patrick Brawn
directed by Peter Hammond
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), Ingrid Hafner (Carol Wilson), Philip Stone (Dr. Tredding), Godfrey Quigley (Spicer), Robert James (Vance), Alister Williamson (Superintendent Wilson), Clifford Elkin (Pretty Boy), Charles Morgan (Mason), Lionel Burns (Prentice), Lawrence Archer (Johns), Redmond Bailey (Lale), Charlie Bird (Peters), Neil McCarthy (Bart), Anna Shan-Khoo (2nd Chinese Girl), Carol White (Jackie), Joyce Wong Chong (Lila)
Big Finish audio cast: Anthony Howell (Dr. Keel), Julian Wadham (John Steed), Lucy Briggs-Owen (Carol Wilson), Colin Baker (Dr. Tredding), Adrian Lukis (Spicer/Vance), Tim Bentinck (Superintendent Wilson), George Rainsford (Pretty Boy), Alan Cox (Mason), Blake Ritson (Prentice)
LogBook entry by Earl Green