Two aliens begin a meticulous study of human behavior. They go to a hotel where a crime of passion has been committed, they use an ingenious device that controls time and this will help them advance or delay the action quickly or slowly and even stop it if necessary. Perhaps with today's technology where any of us can fast-forward, rewind, or freeze frame any movie with a simple remote control, this chapter may not seem that sophisticated, but if we go back to the 1960s, being able to see all that action is quite a novelty. What also makes this story interesting is that the aliens can study the details from different angles and the conclusions they draw as the investigation progresses is hilarious.