The Hardy Boys/Nancy Drew Mysteries (re-titled The Hardy Boys for season three) is a television mystery series based on the Hardy Boys and Nancy Drew novel series. The series, which ran from January 30, 1977 to January 14, 1979, was produced by Glen A. Larson from Universal Television for ABC.
The series starred Parker Stevenson and Shaun Cassidy as detective brothers Frank and Joe Hardy, respectively, and Pamela Sue Martin (later Janet Louise Johnson) as amateur sleuth Nancy Drew.
The Hardy Boys/Nancy Drew Mysteries was unusual in that it often dealt with the characters individually, in an almost anthological style. That is, some episodes featured only the Hardy Boys and others only Nancy Drew.