Cast:
Patrick Troughton, Frazer Hines, Hamish Wilson, Wendy Padbury, Emrys Jones, Bernard Horsfall, Christopher Robbie, Sue Pulford, Christine Pirie, Philip Ryan, John Greenwood, David Cannon, Gerry Wain, Paul Alexander, Ian Hines, Richard Ireson, Barbara Loft, Sylvestra Le Touzel, Timothy Horton, Christopher Reynalds, David Reynalds, Martin Langley, John Atterbury, Ralph Carrigan, Bill Wiesener, Terry Wright