This is another Batman episode in which a character loses their life. The first was in "Smack in the Middle".
Batman: Poor devil... forced to live in an air-conditioned suit that keeps his body temperature down to 50 degrees below zero! No wonder his mind is warped.
Freeze: I will toy with him like cat with mouse. I will lure him right to the scene of the crime. First I toy, then I destroy!
Narrator: Has Batman struck out? Is Robin cool...for good? Can no one save our noble pair of human popsicles? Answers...Tomorrow night! Same time, same channel! But one word of warning: By watching, you too can lose your cool!
Based on "The Ice Crimes of Mr. Zero" from Batman #121 (February 1959) by Dave Wood. Mr. Zero was changed to Mr. Freeze for the TV series, and the comics followed suit.