Last night's Dexter finale was terrible, save for its very closing moments, but even the tease of the revelations to come can't make this season's wrongs seem quite right. And the wrongest of those wrongs is the brewing incest story line between Deb and Dex. (Just because it worked for The Royal Tenenbaums doesn't mean it can work here.) Showrunner Scott Buck tells EW that the story's been coming up in the writers' room since Season 2, but now "it felt like it was finally time to tackle that issue," and he frankly can't believe people's reactions. "We did some research on that among adopted siblings: It does exist and it does happen, and it does create a very awkward situation," he says. "I find it kind of interesting that people are uneasy about Deb's love toward her brother. That on a show about serial killers, it's the idea of love that makes people more uncomfortable." No no no, Scott. It's the idea of incest and totally selling out your characters that makes people uncomfortable.