[1] Gina McVey, a successful radiologist, is examining x-rays of a patient with Situs Inversus, an uncommon condition in which a person is born with their heart and other organs reversed or mirrored from their normal positions.

In the middle of the dinner party, a mirror previously knocked askew when John entered the room falls and shatters.

Kate and Gina proceed to clean the shards and discuss that breaking mirrors is a sign of bad luck.

Gina sleeps fitfully that evening and has flashbacks of her father's birthday party, the accident as well as unearthly scenes and a frightening sexual encounter with a seemingly Stefan.

Dr. Zachman suggests this may be a form of Capgras delusion, a rare psychological condition also known as impostor syndrome, brought on by brain damage and/or memory loss sustained in the car crash.

He advises more tests to be performed and recommends Gina visit her wrecked car in hopes that it will help her remember the events surrounding the accident.

Gina goes to the auto shop to examine her car, and finds the picture she found of her and John from the woman's flat.

While investigating her car, Gina hears the sound of breaking glass and turns to see two identical dogs fighting each other next to a broken mirror.

Later, John's secretary mentions seeing him on the street during lunch, but he tells her he hadn't left the office all day.

Gina hears the water leaking once more and goes to the attic to investigate where she finds Stefan, dead, with his head smashed onto a pipe.

Gina pulls the bag off the duplicate's head, which causes previously suppressed memories she had been struggling to remember to come flooding back to her.

She drops her wallet, glass breaks and she sees herself putting the plastic bag over her head and murdering the real Gina.

[3] It also was the first choice in Horrorfest 2009[4] and was part of Sitges Film Festival 2008,[5] where Angus Hudson won the award for Best Cinematography.