Calificación
Reparto

Ian Hunter
Detective Inspector Gregory

Austin Trevor
Leopold Dryden

Lilian Oldland
Joan Dryden

Henry Kendall
Rodney Fleming

Val Gielgud
Julian Caird

Peter Haddon
Guy Bannister

Betty Ann Davies
Poppy Levine

Jack Hawkins
Herbert Evans

Donald Wolfit
Sydney Parsons

Robert Rendel
Sir Herbert Farquharson

Gordon McLeod
Chief Commissioner

Hannen Swaffer
Hannen Swaffer

Vernon Bartlett
Vernon Bartlett

Eric Dunstan
Eric Dunstan

Gillie Potter
Gillie Potter

Elisabeth Welch
Elisabeth Welch