Grace Chin

Alec agrees to testify as an expert witness in a wrongful death trial for a friend of Kylie's; as he faces an old nemesis, he discovers competing emotions around an accidental shooting; Marisa reaches a decision about the bombing investigation.

Jude must seek help from an old colleague, and face his past in Oakland. Caleb looks for support from Marshall after noticing stronger security around the camp. Sophie deals with a setback.

The team comes together on the island of Pangaea to put the final pieces of the cure in place.

Kyle confronts a dark time in his past; Megan examines how the Institute has impacted her life and her relationship.