The Hardy Boys/Nancy Drew Mysteries (retitled The Hardy Boys Mysteries for season three) is a television series which aired for three seasons on 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.
The Hardy Boys, Frank and Joe, are brother amateur detectives. The two boys live in the fictional city of Bayport, Massachusetts (a change from the book series, which sets Bayport in the state of New York) with their famous father, Fenton Hardy, a private detective who spent “twenty years” with the New York Police Department.
In addition to the Hardy Boys, their stories feature two other characters with some regularity: Aunt Gertrude and a platonic female friend of the boys, Callie Shaw, who also does part-time work for their father. The only other character who played a major part of the Hardy Boys books, Chet Morton, appeared only briefly in the series.
Nancy Drew is the amateur sleuth — she prefers the term “part time investigator” — daughter of attorney Carson Drew. She lives with her father, Carson, in the fictional town of River Heights, New Jersey (another change from the book series, which sets River Heights outside of Chicago).