Natasha Yar

A series of vicious attacks by the M'Dok Empire has devastated the planet Tenara – bringing the USS Enterprise-D and another starship, the Centurion, to the planet's aid. The Centurion captain is Lucius Sejanus – a powerful, magnetic man who favors taking a far stronger stance against the M'Dok than Captain Picard. And as the conflict escalates, Sejanus's instincts seem to be correct… for it appears only extreme measures can stop the murderous raids on Tenara.
Now the people of Tenara must decide which path they will follow – the way of peace, or the road to war. But unknown to any, one of the Centurion officers has made that decision for them – and plans to provoke a full-scale war between the Federation and the M'Dok Empire!

The Hamlin Massacre – every Starfleet officer knows the tale. The tiny Federation outpost of Hamlin was destroyed, its entire adult population ruthlessly slaughtered, before the first defense shields could be raised. Even worse, the colony's children disappeared without a trace, abducted by the aliens who attacked with a ferocity and speed that outmatched their Starfleet pursuers.
Now, fifty years later, the Choraii ships have appeared again. But this time the Federation is ready; this time the Choraii must pay for what they need. The precious metals can only be bought with the Hamlin children still living with their captors.
This time the Choraii must face Captain Jean-Luc Picard – and the crew of the starship USS Enterprise-D…

Interstellar civilization depends on the twin blessings of warp travel and subspace communications. But now an unknown force is disrupting subspace throughout the galaxy, creating "dead zones" in which advanced technology will not function. Ships are stranded in space, unable to communicate. Colonies are losing life support. Governments can no longer negotiate with their allies – or their enemies. Worse yet, the dead zones are proliferating at a geometric rate. Unless a solution is found, the entire Alpha Quadrant may be doomed to a new dark age!
In the wake of the Dominion War, a tenuous peace exists between the Federation and the Romulan Empire. The uneasy alliance is strained to the breaking point, however, by the enigma that is destroying subspace. Now Captain Jean-Luc Picard and Ambassador Spock must join forces with an infamous Romulan war criminal in a desperate attempt to find the source of the disruption – even if it means sacrificing the very peace they hope to save!

While searching for the USS Huxley, missing for more than 10 years, the Enterprise stumbles across a forgotten colony of Humans on a planet called Rampart, where fiction and works of the imagination of any kind are considered a heinous crime. A survey team beams aboard the ship to search for "contraband," and the crew are drawn immediately into a vicious civil war between Rampart's mind police and a band of determined rebels

Like the twisted strands of mutant chromosomes, an insidious alien conspiracy winds its way through the entire Alpha Quadrant, just as it stretches across several years of Starfleet history – beginning near the very start of Captain Picard's command of the Starship Enterprise!
It is only the first year of the U.S.S. Enterprise-D's ongoing mission when a virulent epidemic strikes the populace of Archaria III, endangering the lives of thousands and provoking acts of mob violence against those believed responsible for the spread of the disease. While Data and Natasha Yar team up to uncover the true origins of the virus, Dr. Crusher finds the implacable sickness resists all her efforts to find a cure. The desperate quest for a cure becomes even more urgent when Deanna Troi succumbs to the dreaded plague… again and again.

The Next Generation, Security Chief of the U.S.S. Enterprise NCC 1701-D

Text from back of the card:

"Tasha" Yar was born on the failed colony of Turkana IV. She joined the crew of the U.S.S. Enterprise at the direct request of Captain Picard after he witnessed her bravery first-hand. Yar was chief of security and was killed in the line of duty by the creature known as Armus while conducting a rescue mission on Vagra lI.

Exploring a deserted alien spaceship, Lt. Commander Data and Lt. Geordi La Forge suddenly find themselves transported light years away – into the middle of a deadly conflict!
While Captain Picard and the crew of the USS Enterprise™ search feverishly for the missing crewmen, Data and La Forge discover they are in a station almost identical to the one they were exploring, high in orbit around an Earth-type world. Years before, the occupants of that planet accidentally stumbled onto the ship and its advanced technology – and since then have used its weapons to keep the nations on the planet below disarmed, and at peace.
Now their own arrival has precipitated a crisis on the station. Somehow Data and La Forge must find a way to restore trust between the planet below and the station's guardians up above – before a final, destructive war breaks out!

Treva – a Human colony on the fringes of known space. Isolated from the rest of the galaxy, at last report they were on the verge of becoming a true interstellar community – a full-fledged member of the Federation. But now the USS Enterprise-D has received a distress signal. Treva is in the throes of a violent revolution, a revolution led by a merciless warlord who has committed countless atrocities in the name of freedom.
Data and Natasha Yar are dispatched to investigate. But once they reach Treva, they discover the truth – and any possible solution – may be more complex than a simple rebellion. For Treva's president wants more than Starfleet's good words in her fight against the rebels.
She wants their weapons. And before the battle is over, she means to get them. Over Data and Yar's dead bodies, if necessary.