An unidentified stalker records video of married couple James and Amy Deakin as they hide their spare key outside their home. When the couple leaves to go jogging, he uses the key to enter their home and set up hidden security cameras in each room. He also makes subtle changes, such as setting their alarm to go off earlier and leaving a mix CD in their car. Amy protests when the alarm wakes her up early, and the two argue over who recorded the mix CD. When James finds the audio tracks on his computer, Amy considers the mystery solved, but James insists that he never downloaded them. As they argue, James dismisses Amy's PhD research on Afghan culture as a waste of time, and she refuses to speak to him. The next morning, as James leaves for work, he writes her a brief apology. The stalker enters the house, reads the note, and records video of Amy's reaction to noise that she hears in the house.
