Bulldog Drummond's Peril

Reginald Denny

Algy Longworth

E. E. Clive

Tenny

Porter Hall

Dr. Botulian

Elizabeth Patterson

Aunt Blanche

Nydia Westman

Gwen Longworth

Halliwell Hobbes

Prof. Bernard Goodman

Matthew Boulton

Sir Raymond Blantyre

Zeffie Tilbury

Mrs. Weevens

David Clyde

Constable McThane