Second Chances (Star Trek: The Next Generation)

"Second Chances" is the 150th episode of the American syndicated science fiction television series Star Trek: The Next Generation, the 24th episode of the sixth season. It was directed by series regular cast member LeVar Burton ("Geordi La Forge"). This episode has a cameo by Mae Carol Jemison, the first Black woman in space, who would become the first astronaut to guest star in a Star Trek series.

Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. In this episode, Commander Riker comes face to face with an exact duplicate of himself, created years earlier by a transporter phenomenon.

The episode aired in syndication on May 22, 1993.