Explore the surprising Mirror Universe ties in TOS "The Tholian Web." How this classic episode connects to broader Trek lore is essential viewing for fans.

Star Trek: The Original Series was known for repeating story formulas throughout its run, but once did two very similar episodes very close together.

Science fiction is always at its best when it looks ahead, with some sci-fi movies and TV shows capable of predicting the future. But "Star Trek" might be the franchise that does it best, with a ...