This film truly is a Hollywood story, employing real actors from the silent period and filmed on real locations throughout Hollywood and Los Angeles. There are views of buildings up and down Hollywood Blvd., including Grauman's Chinese Theatre and the Roosevelt Hotel, Charlie Chaplin Studios on La Brea Ave., the Sunset Strip, Universal Studios, and the Hollywood Christmas Parade. It appears that more silent film stars shot cameos than actually made it into the film, but it still salutes and highlights the early days of Hollywood. Art direction is top notch, the acting is fine, and the story is really entertaining. The mystery is well thought out and keeps you guessing until the end. This is much more serious and top notch than the typical William Castle film.