The tune changed from 'this guy may have been a pro' to 'guy they found at an icky dees with all the evidence needed to arrest on him one state over almost a full week later'. Also I default to not trusting the cops and feds when there's any doubt at all as to the guilt of someone arrested as well as the fact that I really hope the real killer is still out there. Best twist would be Luigi is intentionally taking the heat. If that's the case I will lionize.