Doesn't this sound like a Law and Order episode? If it plays out that way, then we can be certain that it won't be Brent, simply *because* he'd be the most obvious suspect

My understanding is that the Cobra matter was actually very recently (last week or so) settled to everyone's (including Brian and Brent's) satisfaction, and the case dismissed... and a joint announcement was to have been made in the next several days, so I would seriously doubt that Brent would have any motive at this point.

But only time will tell... let's hope that the police department in whatever tiny town where Brian lived has some good homicide detectives.