Ηθοποιοί επεισοδίου
Marius GoringDr John Hardy
★
Ann MorrishDr Jo Hardy
Victor WindingDet. Chief Insp. Fleming
Michael FarnsworthDet. Sgt. Ashe
Valerie MurraySandra Hughes
Peter BarkworthWilliams
Timothy BatesonGregg
★
Eric DodsonAckroyd
★
John GrieveJezzard
Basil HensonFrank Houghton
Jean MarshSybil Houghton
★
Barry MeteyardSgt Croft
Glyn OwenThorpe