It sounds reasonable. But here's a horrible thought: what if they don't find the leak at all? Or leave it for a problem Raydor has to deal with when she takes over? Just because The Closer needs closure doesn't mean it's going to get it. TV shows don't always deliver on their promises...remember SG-1.

All of the above is merely a "What if." I think we'll find out in the next four episodes who the leak is.