As the government clamps down ever tighter on the containment zone, seething violence and desperate escape plots take root inside it.

1. Pilot 42m When a deadly virus hits Atlanta, the police and the Centers for Disease Control must work together to limit both the outbreak and the public's panic.

2. I to Die, You to Live 40m Lex solicits help from Jake in searching for a young woman who may have been exposed. Meanwhile, Katie tries to keep her students under control.

3. Be Angry at the Sun 41m As videos depicting violence within the cordon lead to outrage, Lex tries to control the situation. Meanwhile, Katie deals with frightened parents.

4. With Silence and Tears 41m Jana suspects that Lex isn't telling the truth, Dr. Cannerts presses forward with his research, and Katie opens up to Jake about her past.

5. Like a Sheep Among Wolves 41m Lex and Dr. Lommers clash over how to best help those in the cordon, a confrontation leaves Jake feeling outmanned, and Katie makes a discovery.

6. He Stilled the Rising Tumult 40m The heat rises and tempers flare. Lex acts on his suspicions, Katie and Jake set off on a search, and Xander and Teresa must make a tough choice.

7. Inferno 40m Lex clashes with the National Guard, Jana makes a fateful choice, and Xander and Leanne have a difference of opinion.

8. There Is a Crack in Everything 41m Kate and Jake attempt to unravel the truth behind patient zero. Meanwhile, Jana makes a daring move, and Dr. Cannerts achieves a breakthrough.

9. A Kingdom Divided Against Itself 41m Residents stuck inside the cordon fight back, Jake and Katie try to make the best of a bad situation, and Leo soldiers on with his investigation.

10. A Time to Be Born... 41m Lex worries that Dr. Lommers isn't quite herself, Jake comes across some explosive information, and the group enjoys some long overdue good news.

11. Nothing Gold Can Stay 41m Dr. Lommers makes a shocking statement, rumors of a secret escape route spread through the cordon, and Jake makes an unbreakable promise.

12. Yes Is the Only Living Thing 41m Jana, Sam and Suzy put their plan into motion, Lex struggles to follow Leo's lead, and Teresa faces a decision that could change everything.