Suspense, action, a good story and humor are the good ingredients for a spy series. Add to that the very good casting of the actors and actresses. Finished this one in one go.
I am a big fan of Elisabeth Moss, a formidable actress, but after the third episode I gave up. It wasn't Moss's fault—she was brilliant as always—but the slow pace, the extras who failed to captivate me, and the script (that Bulgarian frigate, come on!) that was held together by hooks and eyes. And let's be honest, I'm not really a fan of the spy genre, except for The Americans (brilliant). So maybe I was biased. Unfortunately, I didn't finish watching it.