Reporter Richard Bilton reveals new evidence about the safety failures that led to the deaths of 72 people at Grenfell Tower, and confronts those who may share the blame.

It has nearly been a year since Britain's worst fire in living memory, and nobody has been arrested or held to account. Reporter Richard Bilton reveals new evidence about the safety failures that led to the deaths of 72 people at Grenfell Tower. He tracks down those with questions to answer and confronts those who may share the blame.