The Enterprise encounters an ancient Earth probe bent on the sterilization of all life.
Elenco:
William Shatner
,
Leonard Nimoy
,
DeForest Kelley
,
Majel Barrett
,
Walter Koenig
,
George Takei
,
Nichelle Nichols
,
James Doohan
,
Majel Barrett
,
Bill Blackburn
,
Frank da Vinci
.