This movie epitomizes the exasperation of characters doing stupid things. The main character keeps not giving her superiors the vital information that she knows, which would entirely clear up the situation, and which she wants to give them. The film provides no explanation at all but keeps repeating the killer’s inexplicable escape and the main character’s inexplicable silence again and again for the entire runtime.
Closest comparison: It’s like Halloween (1978) by way of Fallen (1998).
Setting: Police Procedural
Plot: Homicide
Tone: Stalker