Dr Adam Bloom has the perfect life. He is financially secure and lives in a luxurious house with his wife, Dana, and their daughter, Marissa, a recent college graduate.
Late one night, his daughter wakes him up and says 'Somebody's downstairs.' From that moment on, nothing in the Blooms' life will ever be the same.
As the family recovers from the break-in and the Bloom's already rocky marriage falls apart, Marissa meets a young, talented artist named Xan. Adam feels that something's not quite right with Xan, but his daughter ignores his warnings and falls deeply in love with him.
When suspicious things start happening to the Blooms all over again, Adam realizes that his first instinct about Xan was probably dead on. . .