

After Fowler drunkenly admits to having kissed Habib during a pub quiz match, Dawkins begins to suspect the two of having an affair behind her back when Grim enlists Fowler and Habib's help in catching a criminal via entrapment.
It is the tenth anniversary of Fowler and Dawkins' relationship, but Fowler manages to forget, being instead more concerned with the Queen's Official Birthday.
Habib falls for a fireman named Gary, much to Goody's jealousy, while Fowler finds himself pestered frequently by a man who claims to have committed impossible, solved or extremely historical crimes, much to DI Grim's amusement, until a terrorist begins making threats that cause Special Branch to become involved.