I played the role of Sandy in "Payday". Sandy was the groupie who was seduced by Maury Dann and partied with him in his limousine while her boss/boyfriend, Mr. Bridgeway, searched for her. His discovery of where she had been led to his confrontation with Maury and his subsequent murder. I think one thing the other reviewers have missed about this film is the amazing direction by Darryl Duke. His direction of Rip Torn, who was at that time primarily a stage actor, was nothing short of brilliant. Yes, the movie was destined to be a classic. I've heard it was not marketed properly - I guess we'll never know why it didn't get the attention it deserved. I've heard it's Jay Leno's favorite film. A man of discernment!
