Thanks to Josh for the heads up.
USA Today did an interview with Kevin Durand who plays Keamy. It contains a few spoilers… nothing major, although he pretty much confirmed that he won’t be returning next season. (“Lost was really fun. If I can have that experience in any genre, I’d take it.“)
Also in the interview.
Asked to concoct a flashback plot for the stone-cold killer, Durand chooses his words carefully. “Keamy has a very big personal stake in this mission, and it’s beyond anything monetary. He’s just trying to get it done as soon as possible. It has to do with his family, so that’s why he’s working at the pace he is.“