Twenty years on, this heart-racing four-part series reconstructs the terror attacks and the vast investigation that followed, without losing sight of the survivors. The detail about the bathtub is astonishingNetflix is not always known for its restraint in the documentary genre, but with its outstanding recent film Grenfell: Uncovered, and now Attack on London: Hunting the 7/7 Bombers, it appears to be finding a new maturity and seriousness in the field. There have been plenty of recent documentaries on the subject of the attacks and the sprawling investigation that followed – no surprise, given that it is the 20th anniversary this week – but there is still real depth to be found here.Over four parts, this thorough series unravels the initial attacks on the London transport system, which killed 52 people and injured more than 700, then follows that febrile month into the failed bombings of 21 July, and then the police shooting of the innocent Jean Charles de Menezes, a day later. Th...