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

Rosemary Turnbull

Louise Carter

Floretta Turnbull

William Gould

Daniel Talbert

George Guhl

Smitty

John Ridgely

Reporter

William Hopper

Reporter

Creighton Hale

Reporter

Frank Mayo

Tribune Photographer

Frederic Tozere

District Attorney's Investigator

Don Rowan

Phillips