Bonita Granville
Nancy Drew
Frankie Thomas
Ted Nickerson
Helena Phillips Evans
Mary Eldredge
Renie Riano
Effie Schneider
Charles Trowbridge
Hollister
Tommy Bupp
Spud Murphy (uncredited)
Betty Jane Graham
Brinwood Student (uncredited)
Stuart Holmes
Telegrapher (uncredited)
Vera Lewis
Miss Van Deering (uncredited)
Jack Mower
Radio Station Technician (uncredited)
John Ridgely
Radio Station Technician (uncredited)
Cliff Saum
Farmer (uncredited)
Joanne Tree
Student with Black Hat (uncredited)
Brandon Tynan
Ray Spires (uncredited)
Lottie Williams
Mrs. Ray Spires (uncredited)
Tom Wilson
Brennan (uncredited)
