Dave and Matteo rush to the hospital after making a chilling discovery at an old friend's house party.

Linda and Matteo attempt to make an emergency broadcast; Dave splits to save Katie before it's too late.

The crew returns to the hospital in search of survivors; with time ticking, Linda makes a drastic decision to uncover the source of the epidemic, resulting in a shocking discovery.

As Dave's hallucinations get worse, he makes a risky decision to try and get some answers.

Dave must convince Matteo, Linda, and Katie to make a dangerous flight to a mysterious island.

After a treacherous crash landing, the crew struggles to stay awake as they face extreme hallucinations.