The next stage of human evolution has arrived.

Ever since his deadly experiment on the unsuspecting innocents of Bellbrook, the Witness has plagued the DSA. He has cost them dearly with each interaction—including his role in the death of one of their own agents.

Now the Witness is asking for the DSA's help.

The next stage of his terrifying plan has been unleashed, only this time it is not by the Witness' hand or with his knowledge. Another dangerous foe from the DSA's past has subverted the products of his Bellbrook experiment and set them upon a deadly game. One that threatens a CDC facility and the viral contents locked within.

It's a race against time for the DSA team, as they question who they can trust in order to stop the theft of a vicious virus they all hoped destroyed. And when the secret connection between Metcalf and the Witness comes to light, will trust ever be possible again?

The DSA faces its most deadly challenge yet as the second season of the epic series marches on.