"San Bernardino involved two killers were actually radicalized before they started courting or dating each other online, and online as late as - as early as the end of 2013, they were talking to each other about jihad and martyrdom before they became engaged and then married and lived together in the United States."

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Yeah, we've become really good friends. Our characters start dating in the book, and um, yeah, I think we - and we made up little back stories to our characters and little outtakes that we'd bring up to Edgar as a joke, and you know, kind of see different sides of stuff. So yeah, we have a really good time.

— Johnny Simmons