Episódio 15

Nicholas Courtney Lethbridge-Stewart

Peter Hawkins Dalek (voice)

John Levene RSM Benton

Edward Dentith Major-General Rutlidge

Sheila Dunn Telephone Operator

Ian Fairbairn Mark Gregory

James Thornhill Sergeant Walters

Sally Faulkner Isobel Watkins

Peter Halliday Packer

Robert Sidaway Captain Turner