The Hardy Boys Nancy Drew Mystery of the Hollywood Phantom

In 1977 I was 13 years old. I loved reading Hardy Boy Mysteries when I was a kid. I was excited that they got their own TV show with Nancy Drew. Here are parts one and two of The Mystery of the Hollywood Phantom.
S2.E4 Mystery of the Hollywood Phantom, Part I
Episode aired Oct 2, 1977
Pamela Sue Martin in The Hardy Boys/Nancy Drew Mysteries (1977)
Frank, Joe, and Nancy are at a detectives' convention when they discover a mysterious phantom who snatches one detective after another.
Director: Steven Hilliard Stern
Writers: Edward Stratemeyer, Glen A. Larson, Michael Sloan
Stars: Shaun Cassidy, Parker Stevenson, Pamela Sue Martin
S2.E5 Mystery of the Hollywood Phantom, Part II
Episode aired Oct 9, 1977
Pamela Sue Martin in The Hardy Boys/Nancy Drew Mysteries (1977)
Frank, Joe, and Nancy are at a detective's convention when they discover a mysterious phantom who snatches one detective after another.
Director : Steven Hilliard Stern
Writers: Edward Stratemeyer, Glen A. Larson, Michael Sloan
Stars: Shaun Cassidy, Parker Stevenson, Pamela Sue Martin