George Sanders as Jim Fleg

Gail Patrick as Myra Blandy

Richard Denning as Hal McByrne

Lynne Roberts as Kay Ryan

Sidney Blackmer as Martin Cleaver

Kurt Katch as Eric Pahsen

Margaret Brayton as Miss Oval

Charles Tannen as Hollis

Charles Cane as Inspector Henderson

Byron Foulger as Edmund Walpole

Mae Marsh as Miss Hartwig

Lon McCallister as Freddie

Paul Porcasi as Rebescu

Arthur Space as Vance

George Walcott as Benson

Chick Collins as Webley

Walter Deming as Daly

Fern Emmett as Miss Philbert

Bud Geary as Gannett

Harold Goodwin as Stover

Theodore von Eltz as Lucas

Jack Cheatham as Policeman

Jim Farley as Detective

Bobby Larson as Boy

Matt McHugh as Taxi Driver

George Melford as Guard in Library

Frank O'Connor as Guard in Library

Mike Donovan as Guard in Library

Pat O'Malley as Guard Killed in Library

Arthur Thalasso as Air Raid Warden

Hooper Atchley as Air Raid Warden

Bert Roach as Hungry Library Patron

Minerva Urecal as Cookbook-Seeking Library Patron

Alexander Schoenberg as Library Patron

Monica Bannister as Library Patron

Jill Warren as Library Patron