Plot: Confidential is out and about with Karen Gillan (Amy Pond) and Arthur Darvill (Rory Williams). Can Karen get up to 100mph around one of the UK's fastest racetracks and can Arthur rise to the challenge of swimming in a tank of sharks? The team are also on set at Wales Millennium Centre to fend off some brutal new enemies and viewers get to experience a 'Day in the Life' of the camera department