Did any of you watch the State of Play daram - particularly the final episode? If so can you explain to me why the Stephen Collins felt he had to kill the researcher? The truth came out in such a rush, I didn't have time to fully understand the motives. I understand they he had found out that she was a spy and that the hitman/ex army bloke had put her under surveillance, but then I lost the thread a bit - something to do with the Parliamentry Standards Committee. Was he going to go to the committee himself? Or had someone lese found out about it?

Anyone help?