Plot summary
Eichhorst inspects the processing plant for harvesting human blood. He is angry that Sanjay Desai did not use live subjects to test the system. He brutally uses Desai's assistant as a subject, killing him. Gus' turned mother returns to their apartment and attempts to attack Angel, forcing Gus to shoot her. Flashbacks depict how Gus' maternal uncles made his abusive father "disappear"; in the present day, Gus and Angel decide to leave New York. With a rejuvenated Eldritch Palmer's assistance, Setrakian and Fet gain access to the Freedom Center where they interrogate the Aurora Cutlass ship agent and learn the Egyptian cargo was taken to the processing center.
Palmer admits that over a hundred similar blood plants are being built in North America. Fet and Setrakian invade the processing center, but Eichhorst, Desai, and their subordinates escape with the cargo. While playing the black box recording of the Master's paralyzing signal, Dutch collapses. Eph revives her and, later, the two become intimate. During a meeting to form a new alliance, Quinlan and the Ancients are ambushed by Eichhorst and a strigoi army. Quinlan escapes as Eichhorst detonates an atomic bomb that destroys the Ancients' hideout.
Credits
Adapted from Wikipedia contributors, List of The Strain episodes. HTML formatting and reference markers removed.