Having escaped before, Dr Keel and Steed seek again to bring Vance into custody. Keel infiltrates Vance's gang, whilst Steed manipulates his rival, Mason. Both gangs realise too late that they have been deceieved and Peggy's death is successfully avenged.
A PDF of a rehearsal script for this episodes is now included on the Optimum DVD set for Seasons 1 & 2.
This was the 2nd episode produced, with rehearsals scheduled from 31st December, 1960 at the RCA Building in Hammerskith. Camera rehearsals at Teddington Studio Two were on 11th January and 12th January, 1961, and recording to AMPEX tape on the 12th January, 1961.
Filming took place at Studio Two, ABC TV Studios, Broom Road, Teddington, Middlesex. The production number was 3366.