chunk: On the opening night, D'Agosta orders a lock-down of all museum areas except the main exhibition hall. Dr. Frock and Margo, trapped in the laboratory wing, continue working and discover Ford's killer is after the hormones on the leaves. D'Agosta and several officers search the basement tunnels once again. They are attacked by an unseen creature. D'Agosta tells Hollingsworth to evacuate the museum, but he is too late. In the main hall, the headless body of a murdered policeman falls into the crowd, causing a panic. During the hysteria, the museum's alarms are tripped and their security system goes haywire, trapping a small group of people inside. Two security guards try to restore the power but are killed by an unseen creature.