Character Name : Detective Inspector Gregory

Original Name : Ian Hunter

Gender : Male

Character Name : Leopold Dryden

Original Name : Austin Trevor

Gender : Male

Character Name : Joan Dryden

Original Name : Lilian Oldland

Gender : Female

Character Name : Rodney Fleming

Original Name : Henry Kendall

Gender : Male

Character Name : Julian Caird

Original Name : Val Gielgud

Gender : Male

Character Name : Guy Bannister

Original Name : Peter Haddon

Gender : Male

Character Name : Poppy Levine

Original Name : Betty Ann Davies

Gender : Female

Character Name : Herbert Evans

Original Name : Jack Hawkins

Gender : Male

Character Name : Sydney Parsons

Original Name : Donald Wolfit

Gender : Male

Character Name : Sir Herbert Farquharson

Original Name : Robert Rendel

Gender : Male

Character Name : Chief Commissioner

Original Name : Gordon McLeod

Gender : Male

Character Name : Hannen Swaffer

Original Name : Hannen Swaffer

Gender : Male

Character Name : Vernon Bartlett

Original Name : Vernon Bartlett

Gender : Male

Character Name : Eric Dunstan

Original Name : Eric Dunstan

Gender : Male

Character Name : Gillie Potter

Original Name : Gillie Potter

Gender : Male

Character Name : Elisabeth Welch

Original Name : Elisabeth Welch

Gender : Female

Character Name : Eve Becke

Original Name : Eve Becke

Gender : Male

Character Name : Gershom Parkington

Original Name : Gershom Parkington

Gender : Male

Character Name : Percival Mackey

Original Name : Percival Mackey

Gender : Male

Character Name : Joseph Higgins (uncredited)

Original Name : Ivor Barnard

Gender : Male

Character Name : Police Doctor (uncredited)

Original Name : Cecil Bevan

Gender : Male

Character Name : Foreigner (uncredited)

Original Name : George De Warfaz

Gender : Male

Character Name : Weisskopf (uncredited)

Original Name : Howard Douglas

Gender : Male

Character Name : Man on BBC Reception Desk (uncredited)

Original Name : Arthur Hambling

Gender : Male

Character Name : Detective (uncredited)

Original Name : Vincent Holman

Gender : Male

Character Name : Peter Ridgwell (uncredited)

Original Name : Bruce Lester

Gender : Male

Character Name : Wife's Lover on Broadcast (uncredited)

Original Name : Percy Rhodes

Gender : Male