在这部军情五处 第四季剧情/动作/犯罪片中,Season four of espionage drama "MI-5" finds the team reeling from the loss of Danny (David Oyelowo), but thrown back into action when a bomb detonates near his funeral. Zafar Younis (Raza Jaffrey) and Juliet Shaw (Anna Chancellor) are introduced to the show, in a story involving a potentially devastating terrorist attack in the capital. Later in the season Lyndsay Duncan guest stars as a former MI-5 officer with a deadly grudge, one which threatens the lives of everyone back at The Grid.
As the team buries their dead colleague, a bomb goes off in a nearby market. The group, Shining Dawn, demands the release of their leader Michael Monroe or they will detonate another bomb in 10 hours. The CIA is involved since Shining Dawn has primarily directed its wrath at the US and Monroe is an American citizen. The group believes that mankind is a parasite destroying the Earth with its technology and believe that it will be destroyed unless humans are dramatically culled. Harry Pierce is less than pleased when a colleague, Juliette Shaw, suddenly re-appears and is appointed to help out given Fiona Carter's absence. She makes sure that what she knows about Harry's past will ensure a meaningful role for her. An ambush where a suspect is shot through the head tells Adam they have a mole in their midst. Their problems are compounded when one of the agents is taken prisoner.