1esk19, assuming you have the correct extra letters, there is an implied full stop after the second word, and and an implied comma (or and) after the third word. Then it all makes perfect sense
I've filled the grid, identified the thematic item and understood what to do in the final grid. But I have a problem with the extra letter from 15 across, which I have as I when surely it needs to be C. What have I done wrong?
It was 38 down that scuppered me. I have the constituent letters of the solution, apart from the unchecked, and only one word seems to fit - but buggered if I can justify it or identify the extra letter. Very frustrating!!