[voice]
[The Doctor is a bit horrified to see Gwen at first, but he covers it up quickly with a tense smile that she can probably hear in his voice. Considering what happened with the 456, he won't be at all surprised if she's less than pleased with his presence, but he can't leave her wondering if she alone was taken from their reality.]
Hello, Gwen Cooper. Afraid we've got a bit of a problem with an overly enthusiastic artificial intelligence that seems to believe it's been tasked with protecting every universe it can reach from criminal elements.