ABC aired another series featuring the Hardy Boys, "The Hardy Boys/Nancy Drew Mysteries", from 1977 to 1979. The primetime series starred Parker Stevenson and Shaun Cassidy as Frank and Joe Hardy; Pamela Sue Martin and later Janet Louise Johnson played Nancy Drew. During the first season, the series alternated between episodes featuring the Hardy Boys one week and Nancy Drew the next. The Hardy Boys were cast as young adults (Stevenson and Cassidy were 24 and 18, respectively, during the filming of the first episodes). The series featured original plots as well as ones based on "Hardy Boys" books, among them "The Clue of the Screeching Owl", "The Disappearing Floor" and "The Flickering Torch Mystery". The series received an Emmy nomination and featured a number of guest stars, including Kim Cattrall, Ray Milland, Howard Duff, and Ricky Nelson. During the second season, the series format changed to focus more on the Hardy Boys, Nancy Drew appearing mostly in crossover episodes with the brothers; midway through production of the second season, Martin quit and was replaced by Johnson. The series returned for a third season, dropping the Nancy Drew character completely and shortening its title to "The Hardy Boys".