Season 7, episode 21; Adam-12, originally broadcast April 1, 1975. This was Mark's first appearance on Adam-12, he was also seen that year in an episode of Emergency!, in the episode "905 Wild!", which served as a pilot for a show (that didn't sell) about LA County's Department of Animal Control. I.E., Mark was damn near a dog catcher...
Wow... That takes my mind back to a simpler time vegging out to a monster(for that time) Not sure if it was a GE or Zenith console Television set. always had this greenish hue to the picture till it warmed up. Somewhere I think it's still hanging around in the family attic. Used it to play Atari and mess around with a Ti 99/4a on it.
I remember when "Caldwell" decided to "end it", and went to the central supply pharmacy window at St. Eligius, and requested a 30Ml vial of curare, and a 100Ml vial of "Pentothal" (incorrectly known by the public as "Sodium Pentothal, the primary anesthetic for general anesthesia until Propofol gained acceptance around 1990). He had previously prepared a 1000ml bag of normal saline (0.9% Sodium Chloride), by "admixing" 10 grams of Potassium Chloride. The pharmacist asked him "do you have your Class CIII"?, as Caldwell handed him the scripts for both items.
If memory serves, his character was a plastic surgeon, who "acquired HIV through womanizing". I remember David Birney replacing him, and asking a scrub nurse for "plegettes" (little antibiotic-medicated dissolving felt thingies which are placed between the outward loop of the suture prior to tying-off; they stop worn tissue from being torn by the suture) during an abdominal operation).