Eph must choose between Zack's safety and the safety of the citizens of NYC; Gus and Angel assemble an unlikely gang of Sun-hunters.
Dutch fights for her life against Eichhorst; Setrakian confronts an old acquaintance on his search for the Occido Lumen; Gus helps the Guptas escape across the border to safety.
Justine takes drastic measures to counter a surprise invasion; Nora and Fet perform a useful mission; Eph and Setrakian face off against an old foe.
Eph and Dutch work together to thwart the Master's greatest ally; Justine runs into trouble with the mayor; Setrakian tracks down the real owner of the Lumen.
Eph must protect Zack against a surprise intruder into Red Hook; Gus convinces the Guptas to make a difficult choice; Fet and Setrakian set out to acquire the Lumen, but discover they are not the only...
Setrakian and Fet use Fitzwilliam's info to attack the Master; Dutch receives a surprise guest; Eph returns to NYC frustrated but energized to go after the one person responsible for killing his frien...
Eph concocts a plan to make and distribute a bioweapon. Gus realizes Angel can be an unlikely ally, and Kelly comes after Nora and Zack.
Eph changes his appearance to leave the city; Nora is left as the reluctant parent for Zack; Dutch and Nora make a deal with Justine to secure Fet's release from jail.
Eph and Nora finally see their lethal virus in action; Fet takes the security of Red Hook into his own hands; Dutch and Setrakian set off for Staten Island to question Fitzwilliam.
Gus and Vaun attack Palmer; Steph tries to connect with Zack; Councilwoman Justine Faraldo wants to bring her extermination police to the other boroughs.
Kelly searches for Zack; Fet and Dutch grow closer as they clear out neighborhood buildings; Eph and Nora experiment on their new patients.
Eph and Nora work on a biological weapon to kill the strigoi; Setrakian risks the lives of the entire group to find information about a closely guarded secret text; the Master begins the next phase of...
Vampires have had a bit of a bad rep these days. They’ve been everywhere. Clogging up our bookshelves, glaring moodily from the small and the big screen. The Strain written by Guillermo del Toro...
Eph and Fet recon for an all-out assault that Setrakian assures them will finally kill the Master; Gus aligns himself with a strange new force.
Dutch returns with a plan to broadcast Eph's warning about the vampiric plague; Eichhorst launches his own attack against the pawn shop; Palmer receives a special visitor; Gus gears up for the on-comi...