Nancy Drew and the Hidden Staircase

Bonita Granville

Nancy Drew

Frankie Thomas

Ted Nickerson

John Litel

Carson Drew

Frank Orth

Captain Tweedy

Renie Riano

Effie Schneider

Vera Lewis

Miss Rosemary Turnbull

Louise Carter

Miss Floretta Turnbull

William Gould

Daniel Talbert

George Guhl

Smitty

John Ridgely

Reporter

William Hopper

Reporter (as DeWolf Hopper)

Creighton Hale

Reporter

Frank Mayo

Tribune Photographer

Frederic Tozere

District Attorney's Investigator (as Fredric Tozere)

Don Rowan

Phillips the Chauffeur

Dick Elliott

McKeever

Fern Barry

McKeever's Secretary (uncredited)

Nat Carr

Policeman (uncredited)

Sol Gorss

Reporters' Driver (uncredited)

Frank Meredith

Motorcycle Policeman (uncredited)

Jack Mower

Ice Company Dispatcher (uncredited)

Terry Nibert

Turnbull's Kitchen Maid (uncredited)

Paul Panzer

Reporter (uncredited)

Eddie Parker

Motorcycle Policeman (uncredited)

Bob Reeves

Cop (uncredited)

John J. Richardson

Reporter (uncredited)

Cliff Saum

Burt the Iceman (uncredited)

Joanne Tree

Teen (uncredited)

Jack Wise

Second Photographer (uncredited)