After discovering the potency of ultraviolet light against the strigoi, Setrakian gains a new and unlikely disciple. A quick trip to a Brooklyn convenience store turns into a deadly all-night siege.

Setrakian and Fet use Fitzwilliam's info to attack the Master. Eph returns to NYC frustrated but energized to go after the one person responsible for killing his friends.

Justine takes drastic measures to counter a surprise invasion. Nora and Fet perform a useful mission while Eph and Setrakian face off against an old foe.

Eph must choose between Zack's safety and the safety of the citizens of NYC. Meanwhile, his relationship with Nora reaches a critical impasse, and Gus and Angel assemble an unlikely gang of Sun-hunters.