So basically, you have to say who will fair how against whom, or stop at which round. I can't really find a good way to put this many match ups, so I'll probably start a series of threads. But this is where I'll collect the results if I do.
Warmup Round for detectives: Carl Elias - The bigger picture. (Person of Interest)
Trust me. This warm up is quite serious, maybe worthy of being a round. But he doesn't have that many feats as of now.
Round 1: The Boston reaper (Criminal Minds)
Foyet wins by killing the detectives. Detectives win by capture.
Round 2: Dexter Morgan (Dexter)
The detectives come looking for The Bay Harber Butcher. They win by capturing dex, Dexter wins by avoiding capture.
Round 3: Hannibal Lector (Hannibal)
The detectives come to solve an unrelated case, hannibal is just a normal psychiatrist to them. Will hasn't joined yet, so hannibal doesn't have to worry about him. The case spans for months.
Detectives win by noticing hannibal's presence AND capturing/killing hannibal, hannibal wins by evading capture in any way.
Round 4: Walter White (Breaking Bad)
The detectives come to catch heisenberg. Detectives wins by capture/killing, walt by avoiding it.
Round 5: Jim Moriarty (Sherlock)
Detectives have heard rumors of a 'consulting criminal.'
Jim isn't playing around here. Detectives win by capture/kill, Moriarty by outwitting them.
Round 6: Red John (The Mentalist)
Simple enough. detectives come to solve the red john case, win by capture, or killing. Red john wins by doing whatever he does as usual.
Round 7: Prof. James Moriarty (Sherlock holmes, movie)
Warm-up Round: Miami Metro Homicide. Dexter will only act as analyst.
Round 1: CSI: Las Vegas crew. (from earlier season, if they underwent any changes)
Round 2: Will Graham and FBI (Hannibal)
Round 3: Team Shawn Spencer (Psych)
Round 4: Cal Lightman and Team Lie to me (Psych series)
Round 5: Sherlock Holmes and John Watson (Sherlock),
Round 6: B.A.U. Criminal Minds crew.
Both Jason and David are on the team.
Round 7: Jack Baeur (24)
Round 8: Patrick Jane, with resources of Fbi
Harold Finch, Reese, and Team. They are backed by root, Harold is currently Admin of God Mode.