I know who you refer to as the tough SOB, and he is. At the outset I think mistakes were made by the original investigators but these guys now are relentless and they will catch this creep. If this is the same perp he made a big mistake if he killed again- from what I have heard the Dundee crime scene although as you say, grisly, was remarkably free of evidence. That's hard to replicate again. If this is the same guy the chances of catching him went up tenfold when he did this.
I also think that Dr B's announced move may have been the catalyst for this crime. Whoever this is felt the window was closing and Dr B needed to be taken out before he left Omaha. Maybe the perp felt Dr B had figured out who he was and would spill the beans once he was no longer on staff. Much of the focus in the past here was on Dr Belenky. IMO he is a possible suspect but for some reason he never fit in, in my mind. My thinking lately has shifted to closer to home, someone at CU or maybe a disgruntled former pathology resident. I know that was probably
looked into however. Glad to have you here!