This is what happens to paranoid people, not knowing who to trust, who is loyal, and Darius seems to be losing it. He has figured out and understands why Jessica reacts to him in the manner she does, but passes it all off to his attempt to truth drug Selene. So who is going to slap who silly coming up, Riley slapping on Vladimir, or Vladimir slapping on Riley? If Darius thinks Vladimir set him up with Selene and Falco, and thus is wrong about Riley in his assessment then Vladimir is not going to be a happy puppy. But when it comes to bad men losing it, all bets are totally off.