Zoe accidentally discovers her photograph in the newspaper, under it is the address of some website. She contacts the police and is horrified to learn that other women whose details are posted on the site have been killed. When Zoe discovers that someone has been in her apartment, she turns to her best friend Melissa for help. She offers to hide with her. Zoe and her daughter leave their apartment, which has become unsafe, not even suspecting that they have fallen into the trap of an insidious criminal...