Re: Dexter Season 7 (spoilers)
I actually would be amused to see Dexter be brought in on charges for that body by LaGuerta, and have Deb squash them somehow, to keep his secret from everyone. Furthering her down a pretty dark path.
Exactly, Dexter then kills Laguerta, unbeknownst to Deb, and she gets the promotion! Though she does have that inkling that her hands are dirtier than she knows. That sounds like a solid way to wrap up the season. (With other things going on too)