X Marks the Murder (2) Mark, Steve, et al, investigate a string of the so-called ""Casanova"" murders. Dr. Sloan loses his detached perspective when the killer begins calling Mark. Details Casts Title X Marks the Murder (2) Genres Drama Family Mystery Release Date 1996-10-10 Episode Runtime 00 Hours 45 Minutes Season Number 4 Episode Number 5 Production Companies Fred Silverman Company, Dean Hargrove Productions, Viacom Productions Dick Van Dyke Mark Sloan Barry Van Dyke Steve Sloan Charlie Schlatter Jesse Travis Victoria Rowell Amanda Bentley-Livingston Michael Tucci Norman Briggs