Daren A. Herbert

Peter asks Olivia's help in going to the Other Side. Walternate's aid is needed when Walter refuses to help Peter employ the Machine to return to his own timeline. Meanwhile, the threat of the prototype shapeshifters grows and an old enemy returns.

Clark receives a mysterious package containing the crystal that Tess found in the Arctic. When he touches it, it transports him and Lois to the Phantom Zone where they meet Kara.

Tess orchestrates an explosion on a private jet to get Clark to reveal his powers; Davis discovers a surprising way to control the monster within.

The final standoff brings the Masons, the 2nd Mass, and their new allies into the bowels of an iconic American location, wrought with unpredictable obstacles.

Tom gains a powerful new weapon against the Espheni; Ben attempts to extract enemy plans; Pope discovers that Tom is alive; the 2nd Mass must reassess their situation when an unexpected visitor appears.

The 2nd Mass arrives at a functional military base run by Weaver's former flame; the two groups make plans for the final assault on the Espheni.