Star Trek - Season 1 Episode 19 -
Season 1, Episode 19 - Tomorrow is Yesterday
The Enterprise collides with a black hole and is thrown back to Earth in the 20th century, where they must find a way back and erase any trace of their presence. Matters become complicated when they rescue an Air Force pilot and cannot return him without changing history...but if he disappears that will change history as well.
Please explain the problem in a few words.
Max 255 characters.
Max 255 characters.