An urban quarantine happens in Atlanta following a deadly outbreak of a mysterious disease.

Lex finds out that a woman who had close contact with an infected patient has disappeared.

Controversial videos featuring chaos inside the cordon sees Lex requesting reinforcements.

Things become more dire inside the situation room. Lex becomes more frustrated by the false hope he's forced to send to the public.

Lex and Dr. Lommers clash over how to pull off a food drop within the cordon. Katie looks for answers.

As life returns to normal, Lex moves forward with to try and reveal the truth about a possible government cover-up.

Lex ends up clashing with Capt. Scott. The data recovery center is under attack.

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