Stardate 3619.2: While a landing party is conducting a routine survey of a planet, two crewman are killed and one badly injured by a cloudlike being Kirk suddenly believes he has encountered before. It turns out that the creature attacked a ship that Kirk had been stationed on years before and killed most of the crew, and Kirk feels that he should have been able to do more to save his former crewmates. He transfers that guilt to the surviving landing party member, who not only is considered responsible by Kirk, but is also the son of Kirk’s former captain on that previous assignment. Kirk orders the Enterprise to follow the creature through space, determined to kill it – at any cost – before it can take more lives.
written by Art Wallace
directed by Ralph Serensky
music by Sol Kaplan
Guest Cast: James Doohan (Mr. Scott), George Takei (Lt. Sulu), Nichelle Nichols (Lt. Uhura), Stephen Brooks (Ensign Garrovick), Jerry Ayres (Rizzo), Majel Barrett (Nurse Chapel)
LogBook entry by Earl Green