Cause And Effect

I remember when this episode first aired... It was spooky, surreal, and suspenseful. Usually in Star Trek episodes you can spot the "solution" beforehand, or else a character reveals a plan that you know will work, although you assume that it will be a close call. Not so here. Because of the time warp, you know that somehow things will turn out okay, but you really don't know how, and the anxiety level ratchets up each time the crew fails to avert disaster. The show honestly leaves you hanging until the end. This was "Groundhog Day" in the year BEFORE Groundhog Day. (Connection????) The acting is amazing because even though the same scene is repeated several times, the viewer remains rapt in attention. Underrated, sublime episode.