Hi
The way I did it was to encode what I had and then look to see a pattern.
The clue in the preamble is that if you slot them together they form a link of names- 4 in this case. The one you have 15a is the start of a name. ? u r g e ? ?. it does go in 15a
I could them see what letters were needed to make the names in full.
They are a group who were undercover.
The talent scout is the person who recruited them for the other side.
6- 7
A????d D?????h