"Five Characters in Search of an Exit," scripted by Serling, is a third-season highlight in which the titular characters--clown, hobo, ballet dancer, bagpiper, and army major--are trapped in a giant cylinder, with no understanding of how they got there. The truth provides the kind of O. Henry twist that was Serling's specialty, and the performances by William Windom and Murray Matheson (as the belligerent major and carefree clown, respectively) offer a delightful study in dramatic contrast. Finally, "Ninety Years Without Slumbering" is a casualty from TZ's fifth season--a badly rewritten story (originally scripted by acclaimed series contributor George Clayton Johnson) starring veteran screen comedian Ed Wynn as an old man who's convinced he will die if his treasured grandfather clock ceases to tick. Robbed of its dramatic impact by a soft ending that compromises Clayton's original idea, the episode remains entertaining on the strength of Wynn's endearing performance. --Jeff Shannon