Farscape - Season 4, Collection 3

Unrealized Reality (Episode 411)After correctly sensing that a wormhole is about to appear near Moya, Crichton is sucked down it! Inside, he is confronted by an interdimensional being intent on discovering why Crichton was entrusted with this knowledge. The alien sends Crichton through various realities of past events to illustrate the danger of misusing wormhole knowledge.

Kansas (Episode 412)
Crichton and the crew travel through a wormhole to Earth circa 1985, and find the course of time disastrously changed. Crichton?s father Jack is now slated to fly the doomed Challenger mission! Lying low in Crichton's hometown, the aliens use the timely Halloween celebrations to remain (almost) anonymous, while Crichton tries to change the timeline.

Terra Firma (Episode 413)
Crichton and the crew return to Moya in orbit around modern-day Earth to find Jack and a contingent of dignitaries waiting for them. The aliens are introduced to an amazed and apprehensive public, but soon find life in the public eye difficult. Meanwhile, a monstrous assassin sent by Grayza hunts for Crichton, and will stop at nothing to accomplish its mission.

Twice Shy (Episode 414)
Chiana purchases an abused slave girl named Talikaa from a passing Trading Ship. When the crew starts acting strangely and the girl disappears, they realize she may not be as innocent as she first seemed. Returning to the Trading Ship, they discover its occupants have succumbed to a painful death, the result of neural harvesting by an alien arachnid!