Characters played by Terence Longdon
Mark Kingston
Characters played by Donald Gray
Inspector Wills
Characters played by Dermot Walsh
Prof. Taylor
Characters played by Robertson Hare
Ronald Fortescue
Characters played by Diane Clare
Mary Johnson
Characters played by Felicity Young
Jill - Waitress
Characters played by Edwin Styles
Sir Lionel - College Dean
Characters played by Douglas Muir
Detective Sergeant Willoughby
Characters played by Jill Hyem
Joy Clark
Characters played by Max Faulkner
Man Tailing Mark Kingston
Characters played by Tony Thawnton
College Tutor
Characters played by Laura Thurlow
Waitress in Cafe
Characters played by Geoffrey Ryan
[no data]
Characters played by Anne Sharp
(as Ann Sharp)
Characters played by Harold Siddons
Jimmy - Newspaper Editor
Characters played by Mark Eden
Police Constable
Characters played by William Ingham
[no data]
Characters played by Bill Mitchell
Harry Gregg
Characters played by Pete Walker
Man at Reception Desk