Stardate: 4202.9 --The Enterprise responds to a distress call in the L370 system and discovers that something has destroyed almost every planet in the system. They also find its sister ship the U.S.S. Constellation, which has been badly damaged. The commander of the Constellation, Commodore Matt Decker, says that his crew evacuated to one of the pulverized planets and was lost, and the attacker was a giant robot "doomsday machine." Kirk is stranded on the Constellation when the doomsday machine attacks again, and the shell-shocked Decker tries to take command of the Enterprise to lead a futile attack.

original airdate--October 20, 1967  Remastered date--February 10, 2007

music:Theme song  written by Alexander Courage

Goof--After the planet destroyer wipes out the Enterprise's shields, Lieutenant Palmer gives Mister Spock a damage report before the machine attacks again. Elizabeth Rogers, the actress playing Palmer, anticipates the "attack"; she begins to collapse toward her chair a split-second before the Enterprise is "hit."

Trivia--According to the book "The Making of 'Star Trek'", the scanning device that Scotty takes from the Constellation's recess closet was designed by Mr. Spock.

Space: the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.