Wouldn't be surprised if Quinn's sub-plot is going the way of No Russian in MW2. The Doctor and Mr Friendly Terrorist probably knew who Quinn was all along and are using him to pull off a false flag chemical attack in Berlin. Overhearing the plot and killing Mr Angry Terrorist way probably a ploy to make them look dumb and 'harmless'. Still dumb.
Alison's storyline just keeps getting sillier. If the Russians are willing to go to such lengths, including murder and shootouts in a major European city, to protect her as a double-agent, why on earth would Alison use the killbox to take out Carrie? If she knew who set the box up and who did the hits, she's stupid thinking Saul/Quinn wouldn't ask questions. And if she didn't know? She's even stupider for exposing herself to such an unknown.
Alison's storyline just keeps getting sillier. If the Russians are willing to go to such lengths, including murder and shootouts in a major European city, to protect her as a double-agent, why on earth would Alison use the killbox to take out Carrie? If she knew who set the box up and who did the hits, she's stupid thinking Saul/Quinn wouldn't ask questions. And if she didn't know? She's even stupider for exposing herself to such an unknown.