After a wealthy dowager who has made a substantial donation to her alma mater suddenly disappears, Nancy Drew sets out to solve the mystery.
Bonita Granville - Nancy Drew
John Litel - Carson Drew
James Stephenson - Challon
Frankie Thomas - Ted Nickerson
Frank Orth - Captain Tweedy
Helena Phillips Evans - Mary Eldredge
Renie Riano - Effie Schneider
Charles Trowbridge - Hollister
Dick Purcell - Keiffer
Edward Keane - Adam Thorne (as Ed Keane)
Mae Busch - Miss Tyson
Tommy Bupp - Spud Murphy
Betty Jane Graham - Brinwood Student
Stuart Holmes - Telegrapher
Vera Lewis - Miss Van Deering
Jack Mower - Radio Station Technician
John Ridgely - Radio Station Technician
Cliff Saum - Farmer
Joanne Tree - Brinwood Student with Black Hat
Brandon Tynan - Dr. Raymond 'Ray' Spires
Lottie Williams - Mrs. Ray Spires
Tom Wilson - Brennan, the Gate Guard
Director - William Clemens