i just started watching this from the beginning, i don't remember much of it because i was young when it was on. does anyone know what the "units" are? a man and woman come into the interrogation room when madeline is usually trying to get information. they have orange cases. when madeline comes back in, the victims have cuts under their eyes, and i know "saturation" is involved. i'm just wondering what exactly they are doing, and do we ever find out?