Regan’s answer to “What are your conclusions on the ending? Don't want to add spoilers yet.” > Likes and Comments

I believe she was a communist double agent which was ok during war, same side but not ok after war and MI5 eliminated her, just didn't understand time delay. Have no idea if I'm right

Oh dear, I really wasn't paying attention. I didn't even notice any double agent clues in my hurry to finish the bloody thing. Will give it another go, but it was confusing with all the different characters.

I didn't notice any double agent clues either & I'm not willing to read it again!

I don't think she was a double spy until she was forced to be one towards the end of the book.

I just reread the end and the beginning. She was recruited by Merton who we find out at the end that he was a Communist. I don't think she was a communist, just an idealist that leaned towards the left. And maybe she was just following orders of the men she worked for? I'm not sure her heart was really into anything passionately.

The only hint I got was that Perry (I think) said If you're a good spy nobody really knows what side you're on.