1-06: Mudd’s Women

The Enterprise rescues known criminal Harry Mudd and his mysterious female companions.

1-08: Miri

On a planet resembling 1960s Earth, all of the adults have perished from a deadly disease.

2-01: Amok Time

When Spock exhibits irrational behavior from pon farr, The Enterprise heads to Vulcan for help.

2-04: Mirror, Mirror

A transporter accident swaps Kirk, McCoy, Scotty, and Uhura from distinctly opposite parallel universes.

2-05: The Apple

In paradise-like surroundings, a landing party encounters a primitive race controlled by Vaal - a machine revered as a God.

2-06: The Doomsday Machine

Dispatched to investigate the destruction of several planets, the Enterprise encounters the badly damaged U.S.S. Constellation.

2-22: By Any Other Name

The Enterprise is commandeered by members of the Kelvan empire, seeking to return to the Andromeda galaxy.

2-23: The Omega Glory

The Exeter is found drifting in space, its crew dead from a mysterious disease, except its missing captain.