Jess, a newly separated mother and nurse, moves into her old family farmhouse with Tyler, her teenage daughter, and Owen, her eight-year-old son. One night, the family dog senses something in the woods and runs off to find it. He returns a couple of days later and attacks Owen, savagely biting him before Jess is able to intervene. Owen is rushed to the hospital. His condition worsens, and no one can figure out why... until Jess discovers a disturbing cure...
Michelle Monaghan
as Jess
Skeet Ulrich
as Patrick
Finlay Wojtak-Hissong
as Owen
Skylar Morgan Jones
as Tyler
June B. Wilde
as Helen
Erik Athavale
as Dr. Don Forsythe
Onalee Ames
as Jess' Lawyer
Danika Frederick
as Shelly
Jerni Stewart
as Nurse
Jennifer Rose Garcia
as Candice
Cheryl Gensiorek
as Dr. Mansfeld
Michael Strickland
as Officer Parker