Series 9 Rumours & Speculation

[Naivety]

I just cannot see how Ruth is the betrayer. She gave up her entire life for Harry because not only was she in love with him, but also because if Harry had taken the blame for Mawdsley, then Mace and his cronies would have been free to change the moral compass of MI5. She truly believes in what they do.

I'm just not sure about Lucas yet, I hope he comes true but it's looking less likely.

Blake was the ultimate betrayer. He was the Home Secretary and Harry trusted him. He was devastated when Ruth revealed him at the beginning of the series. Now, it looks as though she will have to do the same again, and this time it'll be Lucas.