I've suspected since the second ep that the Ripper style murders are the work of a werewolf. And as for Ethan, there have been clues that he could be the werewolf. For one, there's possibly something right in the opening credits sequence. And, yes, he was shown waking up one day and having had no idea where he was or how he got there. However, there are also conflicting facts like, if he is a werewolf, apparently, as I mentioned to dom and Midnite, he belongs to the DS school of werewolf clothing because, mostly like Chris, Ethan's clothes were barely mussed when he woke up that morning. He wasn't naked, which is the way things are mostly played these days when it comes to showing werewolves waking the morning after. Hell, Ethan still even had his hat. And when he and Brona went to the theater, he didn't blink an eye at the werewolf skit. In fact, he got a good laugh out of it, which seemed like an odd reaction from him if he is a werewolf himself. But then there's also the way the wolves reacted to him. So, I suppose we shall see...