Day 5

After an extended drug bender, addict Jake ventures out into the quiet streets to discover he's actually missed a terrifying global phenomenon.

Ellis's plan hits a snag, just in time for some sleepless delirium to settle in.

New clues converge in Dallas, while Ally attempts a dangerous reunion in Austin.

Lex unveils her research to Ally; Ellis investigates a mysterious signal.

Alliances at Dr. Abrams' facility are pushed to a breaking point, and Ellis' group puts their theory to the ultimate test.