"He was in my home. With a weapon, prepared to kill me. It doesn't get more in self defense than that."

Of course, the fact that Brennan had worked out Epps's final move, had known where he was and what he was going to do complicated that line of reasoning slightly.

"Instead, Booth's beating himself up over the fact that a horrible human being essentially chose to end his own life, and he couldn't save him."

And Epps had known it. Even going to his death he'd reveled in the fact that Booth would hold himself responsible.