1. Target 117
Cade travels to an island to search for a man who has contacted them, saying that he has escaped an alien experiment. Too late, Eddie realizes it is a trap.
First Wave — Season 2
2. Deepthroat
An astronomer friend of Eddie's has proof of a meteor coming through a wormhole, but is murdered by a Gua agent before he can send it to Eddie. He sent a copy to a U.S. Senator who denies receiving the package.
3. The Apostles
Cade travels to a small town in Wyoming that is being terrorized by a motorcycle gang called The Apostles.
4. Susperience
Cade is led to a group of empaths with the ability to influence the thoughts of others. While investigating, he begins to realize the group is under the covert control of a murderous alien.
5. The Channel
After nearly dying in a hit and run accident, a woman begins spouting quatrains every time she sees a bright light.
6. Red Flag
Cade infiltrates a Red Flag competition at West Point military academy, where choice candidates are groomed for government leadership.
7. Prayer for the White Man
Cade suspects an alien influence while investigating a casino on a Native American reservation.
8. The Purge
Treachery is afoot amongst the acolytes on Earth and Joshua is enlisted to ferret out the traitors.
9. Lost Souls
Working in a subway tunnel, a jackhammer operator discovers the body of a travel writer encased in a concrete wall, She is alive and hasn't aged, even though the wall was constructed fifty years before.
10. The Heist
When Cade is hired to steal an item, it becomes a life and death fight for survival.
11. Ohio Players
When a losing small town high school football team is suddenly vying for the state championship, Cade poses as a college football recruiter to investigate.
12. Night Falls
Wounded while fleeing the police, Cade hijacks a car and forces the driver to take him home with her.
13. Normal, Illinois
In a college town, teens have been dying of aneurysms during attempts at having sex.
14. All About Eddie
Eddie must take on the aliens at his high school reunion when he discovers his friends are being kidnapped and interrogated by the Gua.
15. Playland
The death of a murderer and a Nostradamus quatrain lead Cade and Eddie to an amusement park in search of another pocket dimension.
16. The Harvest
Cade investigates a series of disappearances of young women with help from a romantic fiction writer whose sister is the latest to vanish.
17. Rubicon
Cade finds himself in a secret government facility where he is told his mission to fight the Gua is being observed. Suspecting a hoax, he attempts to reveal the Gua in the facility.
18. Gladiator
An alien experiment involving bare knuckle fighters draws Cade Foster and an old prison friend to enter a boxing competition.
19. The Trial of Joshua Bridges
Joshua is put on trial and must defend himself against charges that he is a human sympathizer and a traitor to the Gua.
20. Underworld
Foster poses as a gunman to probe the Gua infiltration of organized crime.
21. Tomorrow
Cade Foster wakes up in a dirty alley and soon discovers strange posters that advertise Human-Gua cooperation.
22. The Believers
Foster and Eddie take over a TV station at gunpoint to get the message out to the world about the alien invasion.