In New York City's singles scene, a young woman looking for love can find herself the object of a deadly obsession. With each meaningless date, Katie Porter is becoming more and more disillusioned. No matter how wide a net she casts she can't seem to find a guy who really understands her. But someone thinks she's special - very special. And he's following her. He sees her at the gym. He sees her at the coffee bar she stops at on the way to work. He wants her, and he won't let anything stand in his way.