At the end of 'Blood on Their Hands, Part 2', in the second season of The Bletchley Circle, I'm confused as to why Susan's explanation was not obvious previously.
At the end of the episode, Susan tells the colonel in the hospital that the injured men at the hospital were deliberately experimented on by Masters. The colonel seems to realize that Oliver Masters has been a loose cannon and calls to send people to Master's house, saving the other members of the Circle. But wouldn't Masters' deception have been obvious to anyone who interviewed the injured men, such as the colonel himself? And was Masters controlling the agents who murdered Richards, shadowing the Circle, etc.?