On a routine exploratory mission, the Starship U.S.S. Hood
picks up a distess signal from a research expedition thought lost long ago- the expedition of Dr. Roger Korby, one of the century's greatest scientific minds. Korby himself is dead, it seems, but his colleagues have made a most incredible discovery- a dicovery they insist the Hood
's captain see for himself. Reluctantly, the captain agrees to beam down...
Meanwhile, the crew of the U.S.S. Enterprise begins long-overdue shore leave on Tranquility Seven. James T. Kirk is looking forward to a few days of rest and relaxation... until what seems a case of mistaken identity plunges Kirk into a whirlpool of mayhem and murder.
And puts an inhuman stranger with his memories and abilities in command of the Enterprise.
Original title: Double, Double
Genre: Fiction→ Science Fiction→ Shared Worlds