This film is the film version of the British TV series "MI5" and is also the finale of this series. Lara Pulver, who participated in the tenth season of the show, returns to continue to play Erin Watts.: When a terrorist escapes during a routine handover, Will Crombie (played by Kit Harington, who played Jon Snow in "Game of Thrones") must work with MI5's demoted intelligence chief Harry Pearce (Peter Firth returns) to track down the terrorist before the upcoming terrorist attack in London. Unofficial spoiler: Harry Pearce also disappeared during the tracking process. At present, not all the original cast members of the tenth season have returned. It is speculated that Erin Watts should play a role in the pursuit. The film was released in 2015.