In Season 12, it is revealed that Dr. Forrester, along with Frank, had died sometime prior to the events of the season and their remains were recovered by Dr. Erhardt. Also, as Erhardt explains to Forrester's daughter Kinga (played by Kathryn Felicia Day), her mother is Kim Cattrall. Presuming that Kinga shares the birthdate of the actress who portrays her -- June 28, 1979 -- she would have been nearly nine and a half years old as of "Mystery Science Theater 3000"'s KTMA-TV debut, on November 24, 1988, further implying that Dr. Forrester and Cattrall's liaison was in the fall of 1978, perhaps while she was filming one of the various TV episodes that she appeared in during that general timeframe, although, inasmuch as "Mystery Science Theater 3000" was "just a show" whose creators advised their audience to "really just relax," the above extrapolation should by no means be considered definitive.