Dark au: Dark Cop (Aka: Evil! Blue Cop) kidnapping Riley, He caught her off guard while she was at home taking out the trash, he parked his vehicle form a feet a down the road from her house under a street light.
And since Blue cop had been missing for days Riley's first instinct was to go to towards him, but then she noticed something very off, Blue Cop's normally pristine white paint was now a ominous dark grey and covered in scratches and mud...
This caused alarm bells to go off in Riley's head, she started slowly backing away with the intention to alert Jun and the others; not noticing Blue Cop's avatar behind her until it was too late! Blue cop tasered her knocking Riley out and carrying her unconscious body back to his vehicle form.
He apologized to Riley for being so rough with her before happily declaring he was taking her to their "New home"...