One shadow is now three
Obviously, the shadow in Cal's family drawing has replicated into triplicates and they are all now alive in the form of ghostly shadow monsters. Either that are they or they have somehow manifested into malevolent spirits which have the ability to possess others. Especially, when it comes to possessing the bodies of the three criminals who were arrested by Detectives Michaela Stone and Jared Vasquez.
So, what the hell is going on with the 3-shadow monsters in Cal's room and the jail cell? Have they all been hiding in Cal's drawing for the last "who knows how long it has been" months? What's up with the creepy shadow monsters? Are they supernatural meth drug dealers who are cooking up "Let Him Go" calling problems for Michaela? Or is it their job to terrify Cal?
Why do the shadow monsters exist? To chase Adrian ... like they did in the last episode? To scare Cal? To force Michaela into helping criminals commit crimes? All of the aforementioned? None of the aforementioned? What do you think?