Marcus, Kristen, and Den see Curtis die and escape the building, joined by Scratch. Anna has a vision of freeing herself and another vision of Marcus dead. Den, Marcus, and Kristen return to the building to find Anna, leaving behind Scratch. The sleeping participants wake after smelling something from the vents. They begin to cough violently, as they did in Anna's vision. Anna breaks free and the gang informs her that the participants have been gassed with mustard gas. When Kristen goes to the bathroom, she goes missing.
