The Excalibur discovers a planet cursed with a Shadow plague a thousand years ago, and hopes to find a cure for the plague threatening Earth.

The crew meets an alien fleeing his government, who may possess secrets to help combat the Drakh plague.

The crew examines the ruins of a long-dead planet, and finds the remains of a weapon that destroyed the civilization.

Galen and Gideon find a renegade Technomage blocking access to an Earthforce mining operation on an alien world.

A pair of aliens arrive on the ship, claiming that humans have visited their world and influenced their culture -- then covered it up.

Galen leads the Excalibur on a mysterious errand deep into hyperspace, testing the limits of Captain Gideon's trust in him. Matheson is investigated by the telepath regulatory agency.

The Excalibur engages the Drakh in battle while on a secret mission. Dr. Steven Franklin comes aboard to study the plague, and makes a startling discovery.

The Excalibur is sent to evacuate a colony of humans who escaped Earth during the Drakh attack -- and who may be spreading the plague throughout the galaxy. Dureena discovers a link to her past.

Gideon and his crew find a bizarre alien being, who uses telepathy to draw out their darkest secrets.

Gideon and Lochley travel to Mars to attend a conference on the Drakh Plague, but must prevent an attack by a group of religious extremists.

Captain Gideon negotiates with a group of aliens to bring his team to their "sacred" planet, forcing he and Lochley to avoid an assassination attempt. Max goes to great lengths to save his ex-wife from a loan shark.

In the wake of the Drakh attack on Earth, Captain Gideon is assigned to the Excalibur to seek a cure for a plague that will wipe out all life on Earth. The ship follows up on a Drakh ship shot down on a deserted planet.

The Excalibur comes across a derelict vessel that carries an alien presence, which spreads from person to person and attempts to take over the ship.

While seeking out an ancient alien healing power, the crew finds rogue Telepath War criminal Alfred Bester -- and are forced to ask for his help.

Gideon finds a lead on a Shadow-hybrid ship like the one that destroyed the Cerberus nearly 10 years ago, and risks the lives of his crew to track it and capture it.

A signal leads the Excalibur to a top-secret Earthforce research base, where Gideon risks his life and his career to find a connection to the destruction of the Cerberus -- and makes a shocking discovery about his own government, and his closest friend.