Allegiance (Star Trek: The Next Generation)

"Allegiance" is the 18th episode of the third season of the American syndicated science fiction television series Star Trek: The Next Generation, and the 66th episode of the series overall. It was originally released on March 26, 1990, in broadcast syndication.

Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. In this episode, Captain Picard finds himself abducted from the Enterprise and held in a chamber with other prisoners, while a doppelgänger replacing him behaves strangely and gives increasingly disturbing orders.