Thank goodness, this was far better than The Twyford Code - but still implausible. Especially the implausibly quiet and easily pacified BABY.  I also did not enjoy the creepy supernatural angle, even though it was explained away in the end. (Not really a spoiler, I think you could see that coming.) Still, it had some interesting twists on the theme "Don’t believe what you’re told just because you trust the person telling you."