Harvey helps Samantha settle an old score. Louis faces a hurdle on the path to fatherhood.
Jonathan Doors (David Hemblen) comes out from hiding, launching a media attack against the Taelons, leaving Boone (Kevin Kilner) to deal with the ramifications.
An ancient Taelon grave in Ireland reveals that the Taelons had been planning Earth's occupation for centuries.
A gifted Russian psychic (Shauna MacDonald) becomes a target for assassination because of her knowledge about the Taelon occupation of Earth.
The renegade alien Ha'gel appears on Earth to exact revenge on the Taelons for destroying his race.
