Hi, not enough space in the title to really ask my question correcty but I remember an episode where kirk, spock or mccoy land on a planet and fine one person still barely alive. As they find the person, the person groans very weird low sounds and changes several colors before dying. I cannot remember the episode title, does anyone? I only ask this because I just found the cbs site where you can watch any episode you want and its driving me nuts trying to find that episode.