There was a translator in the Hungarian trade mission named Shaba Demsky. She was murdered in 1952. She was about to reveal the name of a Soviet agent called Black Water. This girl is going to find out who her father was.
Sam, you meant grandfather.
Not only do I not like the whole show in general as much in the Moffat-era but I feel like we don't get to know the Doctor and his companions as much as we knew Nine or Ten (and all their companions). Any thoughts on why that is?