Kirk pits the Enterprise against an invisible spaceship testing the Federation’s defenses.

Kirk is one of the last survivors who can identify a mass killer, who lurks among a Shakespearean troupe aboard the Enterprise.

Kirk and a landing party are stranded on a planet due to a disease that causes any adult to die a painful death, and must deal with the local children…

A transporter malfunction causes Captain Kirk to split into his “good” and “evil” selves, and a landing party will freeze to death if they don’t merge the two back together.

A strange alien substance causes the crew to act out their deepest inhibitions, while the ship plummets out of orbit.

Captain Kirk must learn the limits to the power of a 17-year-old boy with the psychic ability to create anything and destroy anyone.

Kirk and his crew are at deadly risk from an alien creature that feeds on the salt in a human body and can take on any form.

Stardate: 50126.4 After falling ill to what appears to be a repressed memory Tuvok must perform a mind-meld with Captain Janeway in order to survive. The meld takes them back…