Elena is back at home after her tumultuous vacation, but not for long. She heads off on yet another mission in Germany and faces a lot of unknowns, including stumbling into the hotel where the Night of Long Knives kicks off. 

While Elena is off doing cool MI6 things, we see the resurgence of her sister's friend, who married a Nazi officer. Even Elena's grandfather pops in to help things get sorted. 

I can't wait for the next one!