An investigation leads Harken and Hicks to go undercover in a secret, underground Alphas-only Fight Club.

While investigating a string of crimes, the team realizes that they are looking for Nina, who had gone AWOL, and try to stop her before she hurts herself.

An Alpha loses his mind and kidnaps Rachel; the team loses touch with reality while trying to find Rachel.

The team is confronted with evidence of Parish's evil agenda; a young Alpha reveals a deadly ability.

Rosen discovers the identity of the mole; Kat tracks a mysterious new street drug that makes users temporarily invincible.

Hicks and Kat transport a valuable Parish asset; Roland holds the strategic intel they need to stop Parish.

Rosen kidnaps and interrogates an Alpha prisoner; Harken and Gary search for Skylar.

Rosen seeks a final confrontation with Alpha leader Stanton Parish.