this be certainly one of my all time fav episode of trek . there be just so much go on in this one film that it crazy cool . first the guy beam down to an alien planet thats about to explode . they meet a freaky librarian type dude ( very well play ) . then kirk manages to get himself transport back to what be very much like 16th century earth . mccoy and spock try to follow but instead nearly freeze to death on the frozen version of the alien world 100 and 000 year in the past . kirk manage to get himself lock up and charge with witchcraft while spock enjoy some amok time with a sexy cavegirl who be vanquish to the this frozen and awful world by some bad guy . spock decide he happy where he at and give mccoy a royal assestment whuppin when the doc suggest they need to look for a way out . anyhow and they all finally escape and leave the poor cavegirl behind . it take a ton of convince before spock finally give in and leaf . you can literally taste the sadness at the end . leave the cavegirl all alone in her frozen wasteland just seem cruel and be really touching . spock must have be out of his vulkin mind to leave behind his great hope for love and be human . albeit and in a not so nice neighborhood . anyway and you just get so much bang for your buck with this episode . a love story and the salem witch trial and spock a a human and the desperation of be leave in total isolation . abandon and and three entirely different setting on the alien planet . it amaze they manage to jam all this into one fifty minute film . this one be a classic and do not miss it . i want it on dvd fer shure vulcan .