Star Trek: The Next Generation - Season 5 (1991)

The Crystalline Entity returns, and the Enterprise takes aboard a scientist to help track it down, but her personal agenda does not match Capt. Picard's.

Collision with a quantum filament leaves Troi in charge of a damaged and endangered Enterprise with emergency bulkheads cutting off sections of the ship.

Wesley Crusher returns to the Enterprise on vacation from the Academy only to discover a mysterious alien game infiltrating and controlling the crew.

Picard and Data follow Spock into Romulan space on a dangerous mission.

On Romulus, Picard finds Spock, as well as an underground peace movement, a double agent, a bold ulterior motive against the Federation, and a familiar foe.

Reaching Penthara IV after an asteroid wreaks havoc of catastrophic proportions, the Enterprise crew deals with trying to save the planet as well as deal with someone who claims to be a historian from the future.

Geordi can barely curtail his enthusiasm at being able to test out a new theory of transportation, as Worf's mother boards the Enterprise with his son and news that Worf's Earthly parents can no longer care for him.

Data rescues an orphaned boy named Timothy from a damaged ship. As a way to repress his own pain, Timothy begins to mimic Data's personality.

Transporting three Ullian mind-probing historians, the Enterprise crew is stymied when some of its members fall into a coma. Deanna Troi, the first crew member to come through it, cannot recall anything surrounding the incident.

Working together to prevent the annihilation of a perfectly balanced, isolated society (with no contingency for outside visitors) may, in fact, destroy it.

When an approaching alien ship wipes their memory, the crew struggles to put back together what happened.

A long-lost ship is found on a planet where cosmic storms prevented detection for 200 years. When a surface landing goes wrong, the away team is beamed back...with a few extra surprises.

After an accident that leaves him no longer able to walk, Worf asks Riker to help him commit suicide.

While aiding an androgynous race who lost a couple of members in an unmapped region of space, Riker falls for one of them, which can lead to trouble if detected, since the alien race does not endorse gender specificity.

The Enterprise gets caught in a time loop which always has one result: total destruction of the ship, itself.

Wesley Crusher's team has an accident at Starfleet Academy. Picard offers to help a Starfleet investigation as to what happened, and begins to suspect they are hiding something.

As undetectable parasites devour the ship, Deanna's mother arrives, taking young Alexander under her wing en route to meeting a man she's blindly agreed to marry.

Ferengi machinations unleash a diplomatic gift aboard the Enterprise - the rare, empathic perfect mate, ready to bond with any male around her.

A powerful, potentially dangerous energy life form, intent on scouting out the Enterprise, steps into the role of a girl's imaginary friend.

The Enterprise finds a lone Borg drone, separated from the collective, and brings him aboard. The drone begins to reassert his individuality, but his presence causes differing levels of fear and sympathy from various crew members.

A transporter malfunction, combined with a Romulan ship under stress and a damaged cloaking device, creates the illusion that Ensign Ro and Geordi are dead, but Geordi doesn't believe it to be so, and he acts accordingly.

Picard awakes to find himself living in a small village where he is a well-known member of the community who is suffering from a delusion of being a starship captain.

Captain Picard and his archaeological curiosity are called upon by scientists from Earth when they find evidence to support beliefs that aliens had visited Earth in the late 1800s.