A weird omission after Matt Caldwell's disappearance/murder
The guy was partying with a a few friends and tons of guests the night before he shot the white deer. One of which, the best friend with a scar on his face, we learn has a huge beef with Matt . All those people become completely irrelevant to the investigation while they were the last to see Matt alive. Seems like they needed to at least mention it or have a short scene to where it's said they are not considered suspects.
Dexter could also have tried to misdirect the cops toward scarface.