The Lurker is oddly titled as everything is pretty straight forward once you understand what the plot is. The structure of the movie is to keep you off guard as you aren't certain what the cast is talking about in terms of what is known about the main character. Bt about half way through, it's pretty ovbious what is happening and what's the "secret."
The cast is decent even though they are much too old to be high school seniors. They do the "mean girl" well enough, and creepy toxic male efficiently enough. But, this can't compensate for the tepid plot and twist, as well as the unsuccessful ending. Instead of continuing their attempts for intrigue, the ending simply showcases the base impulse of the characters. Well how not fun this is.
Mediocre production with basic plotting, and mostly adequate acting make this tolerable, but at the end, this wasn't worth the time spent watching.
