This was alright.  It had some neat ideas about artificial intelligence, and there are some good scenes built around that along with some references to past AI foes in Doctor Who, and even some slightly.  Jacob Dudman's narration is perfectly serviceable.  He's got a decent voice for the Tenth Doctor and he's a good performer even when the material feels a little thin like it does here.  Overall, the story felt pretty standard and like The Thing in the Forest before it in the box set, these two audio stories are pretty mediocre overall.