Body Snatchers

Steve Malone (Terry Kinney) is sent to a remote U.S. Army base in Alabama to test the ecological system caused by military actions. With his family, including daughter Marti (Gabrielle Anwar), he moves into their new home on the base, where Marti makes friends with Jenn, the commander's daughter. As people at the base begin acting strangely, Marti suspects they're being replaced by plant-like aliens, which leads to a series of terrifying events.