Nightlight (2003 film)

Celeste Timmerman is a woman with a successful career, an attractive boyfriend named Brent, and a good friend she can trust with all of her secrets.

Later, returning home, Celeste finds that her curtains have been removed, and she has a voicemail message from the stalker saying that he could be anywhere in her house.

Celeste trusts her hotel guard, Derreck, with her suspicions about the stalker's identity, and he reluctantly sneaks her into her suspect's apartment.

Celeste's fear returns as she realizes that David can't be the caller, because he is in jail.

Later, as she discovers that the stalker has put cameras in her house, Celeste is interrupted with a phone call from Justine.

In addition, he sends a video message of Celeste's bird, threatening to kill and eat the pet.

In the climactic scene, Derreck leads Celeste to the basement, telling her it is the stalker's hiding place.

Celeste intervenes just as Derreck is about to kill Brent by hitting the stalker in the head with a pole.