A Perry Mason Mystery: The Case of the Jealous Jokester (1995)

Bill McKenzie's niece works as a production assistant for controversial television personality Josie Joplin, who publicly accuses her of having an affair with her husband. One night McKenzie's niece receives a message which she believes is from Josie to go to her hotel room, when she gets there someone knocks her out and when she wakes up, Josie is dead and she's the number one suspect, so McKenzie defends her.