The group find themselves on a plane, piloted by an Ellis trying to hide his mental state from the others. Abrams gives out why he is no longer working in the facility. ...

In the season finale, alliances at Dr. Abrams' facility are pushed to a breaking point; Ellis' group puts their theory to the test. ...

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

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

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