The Mystery of the Diamond Triangle's primary photo

The Hardy Boys/Nancy Drew Mysteries

The Mystery of the Diamond Triangle (Season 1, Episode 4)
TV Episode | 60 min | Crime, Family, Mystery

While flying, Nancy sees a car go off the road, and reports it. The bridge is out to that section of road, however, and the police don't believe her. Searching for the car leads her to a young mechanic, and a stolen car ring.
Director
Writers
Mildred Wirt Benson (based on the "Nancy Drew" books by) (as Carolyn Keene) | Glen A. Larson (television developer) | Robert Pirosh (written by)
Producer
Composer
Stu Phillips (music score)
Cinematographer
Status
Edit Released
Updated Feb 20, 1977

Release date
Feb 20, 1977 (United States)

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Cast

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12 cast members
Name Known for
Pamela Sue Martin
Nancy Drew Nancy Drew   See fewer
Shaun Cassidy
Joe Hardy (credit only) Joe Hardy (credit only)   See fewer
Parker Stevenson
Frank Hardy (credit only) Frank Hardy (credit only)   See fewer
George O'Hanlon Jr.
Ned Nickerson Ned Nickerson   See fewer
Jean Rasey
George Fayne George Fayne   See fewer
William Schallert
Carson Drew Carson Drew   See fewer
Brian Byers
Morgan Morgan   See fewer
Phillip R. Allen
Everett Everett   See fewer
Len Lesser
Gang Member Gang Member   See fewer
Robert Karnes
Sheriff King Sheriff King   See fewer
Gordon Jump
Officer Hooper Officer Hooper   See fewer
Ron Nyman
Gang Member (uncredited) Gang Member (uncredited)   See fewer
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