Bugs

When Carly goes into the electronics shop an advert for One 2 One mobiles can clearly be seen. A few years earlier, Jaye Griffiths was the face of One 2 One.

Trivia: According to the nurses tending to Roland, only three people survived the Bureaus of Weapons disaster – seen in the series two episodes The Bureau of Weapons and A Cage for Satan - and all three ended up in comatose states.

Trivia: When Beckett goes to see Sir Anthony Fairchild, Alex wonders if Fairchild's daughter has gone missing again, events that were seen in the series three episode Happy Ever After?.

Jan talks about Cyberax wiping out Roland Blatty and the original Bureau, events seen in the series two episode The Bureau of Weapons.

Ed says he is helping out a struggling artist and Alex warns him to remember what happened the last time he helped out an artist – Kitty McHaig, events that were seen in the series three episodes Blaze of Glory and The Revenge Effect.

Trivia: It is revealed that Jan's real name is Barbara.

This episode was mostly filmed in Stansted Airport in Essex. Other scenes were filmed in the nearby village of Thaxted.