I swear, these cops are the stupidest people on the planet. Ah yes, a girl having been dead for at least a few moments after a traumatic event seems catatonic and unresponsive when talking about what happened. She must be hiding something! Lets investigate these baseless claims instead of looking for him. And a man knowing every bit about a college students schedule? Must be a hit man with a grudge and not a stalker despite the dude being a well known serial killer with no links between targets. "Thats a fatal looking wound to the neck, I am a police officer I know what fatal wounds look like, especially from several yards away- oh shit she's breathing".
The teacher is a controlling dickbag, the cop feels like they are trying to move the story along quickly, and I wish they would go all in with Yang being an obsessive dirt loving creep who can't handle the fact he killed his wife. Hope they all get whats coming to them instead of it feeling like a love triangle.