Matthew Walker

A scientist working on advanced propulsion technology is killed by a disabled janitor, Roland, who then corrects the man's calculations. Mulder and Scully investigate and find that another recently deceased scientist, whose head is cryogenically frozen, was Roland's twin brother and is controlling him telepathically from beyond the grave.

Mulder and Scully search for the truth when an anthropologist discovers what could be the frozen remains of extraterrestrial life.

When a woman is found in suspended animation, the team is shocked to discover it is Dr Weir herself, who tells them of her trip ten thousand years into Atlantis's past.

Clark is in his barn one moment... and the next finds himself in a psychiatric hospital where he discovers he's been suffering from delusions that he came from another planet and has super-powers.

Richie tries to track down his parents and runs afoul of a female crime boss. Duncan comes to his help while pondering his own life among the MacLeods.

Beka (Lisa Ryder) and Harper (Gordon Michael Woolvett) try to convince Secretary Falin (Matthew Walker) to join the new Commonwealth. As the 50th world to sign, this would complete the first stage of the restoration of the Commonwealth. Meanwhile in the Eureka Maru, Dylan (Kevin Sorbo), Tyr (Keith Hamilton Cobb) and Andromeda (Lexa Doig) come upon The Clarion's Call, a missing and decommissioned High Guard troopship. While aboard, they forcibly remove the ship's avatar, Ryan (Michael Hurst). As they return to the Maru, they question Ryan about the location of any other missing ships of the High Guard and Commonwealth. The crew knows that the ships, having been captured 300 years ago, are in danger of an attack by the Nietzscheans. Ryan reveals that the ships are in a star system called Tartarus. Regardless of the danger, they race to the system and find 53 abandoned ships.