On 7 July 2005, four bombs explode in London. Detectives, survivors, emergency services and victims families relive the moment. Who did it, and will the bombers strike again?

Following the 7/7 attacks, politicians, survivors and police come to terms with the impact. The police frantically investigate, and the government urgently reassures the public.

Two weeks after 7/7 attack, the police are on the trail of the bombers. On 21 July, there’s another attack. Four bombers are on the run, and the manhunt leads to a catastrophic shooting.

Have the police shot one of the bombers or made a big mistake? The rest remain at large as the police investigate every tip off. Dramatic arrests follow, and the survivors reflect.