Cathexis was a good episode of Star Trek Voyager and I enjoyed watching this episode because it had a great mystery and story. The characters were their usual selves trying to figure out what had happened to Chakotay and Tuvok. I must admit that I'm getting a little episode lag with all these stories about time travel and incorporeal alien beings! Season one seems to cover enough of these types of stories for the whole series! The way the story played out was interesting and definitely worth watching. I look forward to watching the next episode of Star Trek Voyager!!!!