Jesse, Tulip and Cassidy are back, and so is the hell they've been raising since they began their journey to find God. Season 4 picks up with Jesse and Tulip walking right into Masada, The Grail headquarters, to save Cassidy. But Cassidy makes a decision that complicates everything.

Watch the 2-Hour Season Premiere Now

Meanwhile, as Jesse and Starr 's war rages on, God is taking steps to make the apocalypse happen, for real. Watch the premiere of the fourth and final season available now on amc.com and the AMC app for mobile and devices.

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