Remember Me (Star Trek: The Next Generation) After taking him to his quarters discussing the loss of old friends, Dr. Crusher visits her son Ensign Wesley Crusher (Wil Wheaton) in Engineering. Wesley attempts to create a static warp bubble but the experiment appears to fail. As the "Enterprise" leaves Starbase, Dr. Crusher finds that Dr. Quaice seems to have gone missing, with no record of him coming aboard the ship. As she performs a medical test on transporter chief O'Brien (Colm Meaney), she realizes that her medical staff are missing; further investigation and discussion with the crew shows that she has always worked alone in sick bay.
In Theory (Star Trek: The Next Generation) on VHS cassette, appearing on September 5, 1991, in the United States and Canada. The episode was later released on LaserDisc on September 24, 1996, and also included on the "Star Trek: The Next Generation" season four DVD box set, released in the United States on September 3, 2002. The first Blu Ray release was in the United Kingdom on July 29, 2013, followed by the United States on July 30. In Theory (Star Trek: The Next Generation) "In Theory" is the 25th episode of the of the American science fiction television series "", originally aired on June 3, 1991,