Basically Craig wakes up in a room to find he's been drugged and is questioned throughout the episode by an expert interrogator who will use any methods he can to get answers. But what is he talking about? Does Craig really know anything? What is he really after?
This is mainly in the same room using flashbacks from other episodes and clever wordplay - this may sound boring but it's very clever in its approach and the dialogue between Craig and his interrogator is superb.
The lack of action and travelling causes a little tedium, but you'll be won over by Stuart Damon's performance and the ingenius twists which ensue.