Obsessed with Lacey to an unhealthy degree, the stalker, as the name suggests, watches the girl from the sidelines, even trespassing and peeking out of her window just to get a look at her. The stalker also leaves eerie phone calls for Lacey, whincoherent rambling makes it clear that Lacey is his one and only goal
The stalker seems to be aggressive, or at the very least extreme in his methods, sending Lacey flesh as a present and tearing her apart while she was still alive