also, these aren't facts, but implied points that were shared this episode as well:

Paul is gay, and is really insecure about it. - he tells Ray's partner that he almost hit a gay guy who was checking him out earlier and called him a Fag to which Ray's partner responds, "why would ya do such a thing, got something to hide?" - The whole scene with him and his girlfriend to me is completely irrelevant unless he is gay because Paul's whole side of the conversation consists of him saying there is nothing wrong with him, this is her fault not his, and who am i supposed to be. - Mother indicates that all the girls always have loved him, why doesn't he know this by now - Took viagra in episode one to get it up, and won't stay for morning sex - Also kinda points to why he wouldn't accept the solicitation from the girl in episode one, besides the fact that he is also a cop.

The Raven mask seems to have belonged to Casper. - In one of the last scenes with Ray in Casper's Hollywood house, it is shown that Casper owns a multitude of animal masks, but there is one missing. Presumably the raven.

Ray killed the wrong man - if he killed the man who Frank said raped his wife. (More speculation than implication in narrative) - Ray and wife both do not have red hair. Although the red hair gene could potentially still be passed down? I'm not sure, it'd be cool if someone could clarify - Ray doesn't want paternity test to know if he is father because he knows he isn't and doesn't want the verification that it wasn't the man whom he killed.

Michael keaton is the killer. - Wears birdman outfit.