First broadcast 4th July 1973.
A South African diplomat visits London, and the men of Special Branch are assigned to protect him from an anticipated assassination attempt.
George Sewell ... Detective Chief Inspector Alan Craven
Patrick Mower ... Detective Chief Inspector Tom Haggerty
Roger Rowland ... Detective Sergeant Bill North
Kenneth J. Warren ... Coatzee
Arne Gordon ... Wildebrand
Bloke Modisane ... Mbeya
Alex Scott ... Graham
Louis Mahoney ... Jalobe - South African Freedom Representative
Jean Harvey ... Mrs. Curzon-Smith
Patrick McAlinney ... Father McMahon
James Grant ... Detective Constable Imrie
Edward Jewesbury ... Prison Governor
Rosemarie Reede ... Marianne (as Rosemarie Reed)
Ronald Leigh-Hunt ... Instructor (as Ronald Leigh Hunt)
Michael Godfrey ... Envoy
Sheree Joseph ... Annette
