New details have arrived at GateWorld for “Outcast,” this week’s all-new episode of Stargate Atlantis! The episode will premiere Friday, February 1 at 10 p.m (9 p.m. Central) on SCI FI Channel.

Here is how SCI FI describes the episode:

When Lt. Colonel John Sheppard is informed that his father has passed away he packs a few things and, accompanied by Ronon, heads back to Earth to attend the funeral. There, Ronon gains some insights into his friend’s past — Sheppard’s troubled relationship with his father and brother, as well as his ex-wife Nancy, a director with Homeland Security.

Before long, they are approached by a woman, Ava Dixon, who claims to know about a covert project involving nanite programming. Sheppard’s worst fears are realized when she leads them to a high tech lab and reveals that she and her partner have been successful in creating a human form Replicator — a Replicator now loose somewhere in the city who must be recaptured at all costs.

“Outcast” guest stars Sliders actress Kari Wuhrer as Colonel Sheppard’s ex-wife.

Watch a preview scene from the episode now at GateWorld Play!

MGM has also posted photos and a video teaser from the episode at their official Stargate Web site.

“Outcast” will make its U.K. premiere on Tuesday, February 5 on Sky One. Learn more about this and other upcoming episodes in GateWorld’s Season Four episode guide.