Data experiences anger for the first time during a Borg attack that differs from previous encounters.  Picard and the crew try to track the Borg down while Data attempts to recreate the emotion.

When returning to the Enterprise, Picard, Data, Troi and Geordi find that the Enterpise is frozen in time with a Romulan ship and in the middle of a core breach.

Riker returns to the site of a 8-year old mission, to retrieve important research data and is unnerved to encounter his identical twin.

Warrior Kahless returns from death to reclaim the Klingon empire.

The death of a pioneering Ferengi scientist ebroils Dr. Crusher in a mystery that may end her Starfleet career.

On a secret mission to a troubled planet, Riker questions his mental stability after experiencing a series of confusing vignettes.

The death of Picards archaeology professor results in a tantalizing mystery involving Klingons, Cardassians and Romulans.

Picard becomes intrigued and then involved with a brilliant new crew member, creating complications when a potentially deadly mission arises.

Captain Picard and a desperate gang of thieves are trapped on board the Enterprise while the ship is being swept with deadly baryon rays to remove radiation the ship has absorbed over time.

Data explores the experience he had while zapped, Worf is held prisoner by Romulans with the Khitomer survivors.

Data is zapped by a energy stream and has strange memories from during the time he was out. Worf hears a story that his father may not have died on Khitomer but may still be alive on a planet near the Romulan neutral zone.

Picard is near death and Q makes him relive a tragedy from his Starfleet Academy days.

Troi wakes up as a Romulan intelligence officer much to her surprise. She then finds out that it is part of a elaborate scheme for Romulan dissident's to defect.

A Starfleet Lieutenant and a Klingon officer is implicated in the murder of the missing starfleet officer on a remote relay station. One of the shuttlecraft's is missing as well. Aquiel Uhnari is befriended by Geordi after he reads her personal logs during the investigation.

Data is playing Sherlock Holmes on the Holodeck, a glitch appears and Lt. Barclay is called to investigate and he discovers protected Holodeck files. Professor Moriarty is then released and demands to see Captain Picard. Against the laws of physics, Moriarty is able to leave the Holodeck and takes control of the Enterprise.

Captain Picard's secret mission fails, leading to him being captured by Cardassians. As he is tortured by his captors, Captain Jellico and theEnterpriseattempt to prevent war with the Cardassian Union.

Picard, Worf, and Dr. Crusher are reassigned from the Enterprise to a secret mission. Meanwhile, the Enterprise is under the command of Captain Edward Jellico, who immediately starts making changes, much to the dismay of the crew.

Data discovers a group of robots that he believes qualify as lifeforms.

After a computer malfunction,Worf, his son Alexander Rozhenko, and Counselor Deanna Troi are trapped in an Old West holodeck program wherein the interactive characters physically resemble and have the same enhanced abilities as Data.

Picard, Guinan, Ro and Keiko experience trouble aboard their shuttlecraft and transport back to the Enterprise...as 12 year old children.

A young honor student serving aboard the Enterprise is torn between remaining a part of the crew or accepting an offer made by Q.

Adjustments to the subspace sensor array inadvertently establish a link to aliens who begin kidnapping crew members for experiments.

The Enterprise discovers a Dyson Sphere, in the process they discover a disabled ship that still has a crew member on board. When beaming over to the ship, Jordi discovers Montgomery "Scottie" Scott in the transporter system of the ship.

A visiting ambassador conceals the deadly secret to his successful negotiations as he attempts to use Troi to further is reputation.

A skittish member of Geordi's engineering staff encounters a bizarre creature while in the process of transporting from another ship.

The away team after encountering Mark Twain and Guinan in the 19th century, try to solve the mystery of who and what alien is killing people in 19th century San Francisco.