[spoilers] Lucas. Just Lucas.

[molecatcher]

As someone who follows Spooks for its brilliant scripts with no real affiliation to any one character now Ros has gone, I can sort of see both sides of the argument here. I agree with what Nitrus says that the direction they have taken Lucas does make some sense. He was in a pretty sorry state in the last series once he got involved with that CIA blonde cut-out character. He seems to crave a relationship, any relationship because he has nothing in his life. The way he's behaving is bizarre but not completely out of character. They did the same to Harry at the start of the series getting his head all messed up and Ruth is nothing like her old self. Trust the script writers. It's Spooks folks so there's bound to be one hell of a twist towards the end.