Star Trek episode "Mirror, Mirror"

"Mirror, Mirror"

Season 2, episode 4.

Great. Another ion magnetic storm. They pop up all over and they don't know a thing about them!

A masterpiece episode--this is one of the ones you show a friend who has never seen Star Trek before to make them into a Trekkie.

This is a perfect episode that has a strange transporter accident make a landing party switch places with their counterparts from a parallel universe. Even though Kirk does come up with the implausible answer a little quickly, that is simply a way to move the story along.

And, the odds of the same four landing party members in both universes transporting at the same exact time in the same exact orbit of the same planet is extra-astronomical, it is still fun.

Although, you do wonder what exactly happened with the talk about mining those dilithium crystals from the Halkans on that planet--that is never resolved.

Also, the Tantalus Device is super-interesting, a device that can wink enemies out of existence.