Oh and another thing that bothered me about the episode - stealing the keystone. Now, I know that the gamma-ray-loving abnormal obtained it somewhat illegally (by buying it from the museum guy), but he had indeed "bought" it, so to speak. So what right did Magnus and Druitt have just to go steal it like that? I mean, if you think about it, who had the right to the keystone, really? Did Magnus really have any more of a right to it than gamma-ray-loving dude? Because the museum didn't even get it "properly" - so to speak. Shouldn't it really belong to the Mongolian government museum or something, since it's origin was in the wilderness in Mongolia? Anyways - it seemed a little bit "wrong" for them just to steal it, imo - sort of like: "we need it, so everybody else be damned!" - they could have made that aspect a little bit better, I think - either by making it more obvious that the gamma-ray-loving abnormal dude had knowingly engaged in illegal activities or by just having Magnus leave a stack of cash in the place of the keystone, or something...dunno.
But I am nitpicking - overall I did like the episode, even with the few weak points.