Four young Brits are on a path of radicalisation that will end with London's deadliest terror attacks. When explosions rip through the city, survivors and first responders are plunged into chaos.
Investigators follow the trail back to a quiet suburb, where they make a shocking discovery. The father of one of the bombers speaks out.
As London settles, a second string of attempted attacks sparks a nationwide manhunt. The true architect of 7/7 reveals how he planned the attacks.
