This is one of the best episodes in Season 2, full of interesting ideas and a cracking plot. There are excellent performances from Shatner and Nimoy in dual roles and Diana Muldaur makes an impressive debut in the Star Trek universe in a third such role. This is what Star Trek is all about- transporting the viewer into high concept musings under the disguise of mainstream entertainment. Boldly going where no tv series had gone before.
Review of Return to Tomorrow
