Star Trek: The Next Generation – Preemptive Strike [7.24]

Ro, now a lieutenant with advanced tactical training, is tasked to infiltrate the Maquis, whose aggressive actions are threatening to plunge the Federation and the Cardassians back into war.  However, Ro grows sympathetic to the Maquis cause–attempting to protect their way of life from Cardassian harassment after their colony was relegated by treaty to the demilitarized zone.  Ro grows particularly close to a Maquis leader called Macius, and after he is killed she betrays the Enterprise and warns the Maquis of an operation to capture them.

Star Trek: The Next Generation – Homeward [7.13]

Worf’s adopted brother, Nikolai, tricks the Enterprise into helping a village from a doomed pre-warp civilization, in violation of the prime directive.  This forces Picard into allowing Nikolai to attempt to trick this village into thinking it is making a perilous journey to a new land, when they are in fact only on the holodeck awaiting re-location to a new planet. 

Star Trek: The Next Generation – Force of Nature [7.9]

Attempting to find a missing medical ship, the Enterprise encounter two scientists who claim their world is being threatened by the continued use of warp drive. 

Star Trek: The Next Generation – Gambit, Part II [7.5]

Picard, Riker, and Data manage to simulate a battle between the Enterprise and the pirates that continues to convince the pirate captain of the ruse they are pulling.  The pirates continue to acquire artifacts which Picard eventually learns are the pieces of an ancient Vulcan telepathic weapon.  The pirate captain is defeated but the real enemy is determined to be a Vulcan isolationist that PIcard thought was working with him.  At the last minute, Picard realizes the weapon only works against people with malevolent thoughts, and is able to defeat the Vulcan.

Star Trek: The Next Generation – Gambit, Part I [7.4]

Riker and the crew of the Enterprise find evidence that Picard has been killed while on leave exploring some archeological ruins.  Investigating further, Riker is captured by space pirates who are seeking particular Romulan artifacts, but is shocked to discover that Picard is amongst the pirate’s crew! 

Star Trek: The Next Generation – Suspicions [6.22]

Dr. Crusher tells Guinan the story of how she found herself involved in the murder of a Ferengi scientist who is attempting to develop a new form of shielding, which led her to disobey orders and get herself relieved of duty. 

Star Trek: The Next Generation – Face of the Enemy [6.14]

Troi wakes up to discover she has been surgically altered to appear Romulan, and placed aboard a Romulan ship as a high ranking intelligence officer. 

Star Trek: The Next Generation – The Quality of Life [6.9]

Data becomes suspicious that small robots called Exocomps invented by a scientist to assist her in engineering experiments are actually a new life form.  When an accident endangers Picard and Geordi, Data refuses to allow the exocomps to be sacrificed to save them. 

Star Trek: The Next Generation – The First Duty [5.19]

Wesley Crusher is becomes involved in a cover-up regarding the reasons for a fatal space fighter accident at Starfleet Academy.