The eighth episode of that fourth season, "Get Out of Town," I found especially interesting because it features a henchman character named Stanley, clearly modelled on the persona made popular by the late Rondo Hatton in various Universal horror and mystery programmers, including THE PEARL OF DEATH and HOUSE OF HORRORS. Hatton died with his last picture, 1946's THE BRUTE MAN, still awaiting release -- the victim of a bone-distorting pituitary disease called acromegaly, which had also been responsible for his distorted features.
"Get Out of Town" begins with Mike Barnett entering his apartment, only to be quickly overcome by a gigantic hand that chloroforms him.
No information about the later life of Fred Lightner is yet available, but it seems likely from these photos that he would not have had much longer to live. The point is not whether Rondo Hatton and Fred Lightner really were exposed to mustard gas, or if they -- like many others -- became acromegalic through some other internal process. The real point is that, until now, Rondo Hatton has always been a singular case study among actors, but this sighting of Fred Lightner proves that at least one other, authentically disfigured actor followed in his footsteps to play the sort of character he made infamous.