Ηθοποιοί επεισοδίου
Julian GloverAlfred Barton
★
Graham SeedPorter
Barrie InghamDr. John Thorndyke
Peter SallisDr. Jervis
Derek SmithProf. Popplebaum
★
Nicholas SelbySuperintendent Miller
George InnesAdolph Schonberg
★
Eric McCaineInsp. Badger
★
Peter BetonM. James
Max FaulknerMounted Policeman
★
Clive RogersVictim
★
Keith TaylorFierce Little Man
★
Michael HardingTicket collector