Description
“Obsession,” Ep. 47 – A “vampire” cloud, which Kirk failed to destroy 11 years ago, has returned to stalk the crew of the U.S.S. Enterprise. “The Immunity Syndrome,” Ep. 48 – Kirk, Spock, and McCoy frantically try to devise some means of stopping a gigantic single-celled creature that has destroyed an entire solar system.

Star Trek – The Original Series, Vol. 24, Episodes 47 & 48: Obsession/ The Immunity Syndrome

Description
“Obsession,” Ep. 47 – A “vampire” cloud, which Kirk failed to destroy 11 years ago, has returned to stalk the crew of the U.S.S. Enterprise. “The Immunity Syndrome,” Ep. 48 – Kirk, Spock, and McCoy frantically try to devise some means of stopping a gigantic single-celled creature that has destroyed an entire solar system.

Star Trek – The Original Series, Vol. 24, Episodes 47 & 48: Obsession/ The Immunity Syndrome

Description
“Obsession,” Ep. 47 – A “vampire” cloud, which Kirk failed to destroy 11 years ago, has returned to stalk the crew of the U.S.S. Enterprise. “The Immunity Syndrome,” Ep. 48 – Kirk, Spock, and McCoy frantically try to devise some means of stopping a gigantic single-celled creature that has destroyed an entire solar system.

Star Trek – The Original Series, Vol. 24, Episodes 47 & 48: Obsession/ The Immunity Syndrome

Description
Episode 57 – Elaan of Troyius – Kirk and the U.S.S. Enterprise are assigned to deliver Elaan, the beautiful Dohlman of Elas, to her rival planet Troyius. But her unruly behavior threatens to cost Kirk his ship.
Episode 58 – The Paradise Syndrome – The Enterprise’s mission: to deflect an asteroid from colliding with a planet. But shortly after Kirk, Spock and McCoy beam down to survey the planet, Kirk vanishes.

Star Trek – The Original Series, Vol. 29, Episodes 57 & 58: Elaan of Troyius/ The Paradise Syndrome