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Purdey (Joanna Lumley) heads to an obstacle-laden firing range in hopes of breaking Steed's (Patrick MacNee) perfect marksmanship record. Five of Steed's previous associates have attempted the same thing at the same range, have fallen short of a perfect score by a mere fraction--and have promptly died of poisoning. Unless Gambit (Gareth Hunt) can run the range and score 100%, Purdy will be Victim Number Six. Roy Boyd, the actor cast as Bradshaw, was a last-minute replacement for frequent Avengers guest star Frederick Jaeger), who caught a cold during filming and was "demoted" to a smaller part.