The Contract (1999)

Anna has a bad week. Her boss is a pain to her, as is the grocery store clerk. Her friend was bad to her, her husband couldn't take his eyes off a waitress, and her babysitter annoyed her. One night at the local pub, she tells a man about her problems and he says he can solve them if she just signs a paper. The next day, her boss has been brutally murdered. Soon, Anna realizes everybody she knows is in danger, including her family and friends.