"Threshold" is not just one of 'Voyager's worst episodes, but one of the worst 'Star Trek' installments overall. Read why ...

While Star Trek has managed to keep a consistent level of quality overall, some TV seasons were widely disliked by critics ...

As 'Threshold' turns 30, there's still some potential in between all the weird space amphibian sex.

The result was a series that could balance hope and horror in equal measure. Across its seven seasons, Voyager experimented with suspense and psychological drama in ways that still unsettle fans ...