Casting Principal
Alfred Marks
Captain Katt/Ludovic French/Inspector Brough
Derek Royle
The Professor/Frank Lucas
Janet Behan
Lieutenant Rook/Louise Jobling
Simon Rouse
Desmond Gibb
Sarah James
Pat
Clare Clifford
Margot
Howard Samuels
Toby
John Elmes
Dave
Patricia Maynard
Madeleine Forsyth
Ian Fairbairn
Ted
John Owens
Joe
Ros Simmons
Mugwump/Sylvia Pym