Forensic officer Cliff Todd is shown slowly walking through sweltering railway tunnels recovering body parts after the July 7 suicide bombings, highlighting the grim aftermath of the attacks.

Sir Ian Blair is portrayed as grandstanding in public briefings and brushing aside his advisors’ concerns, particularly those of Deputy Assistant Commissioner Brian Paddick, during frantic discussions at New Scotland Yard.

Jean Charles is introduced as a gentle-mannered electrician who also works as a kitchen hand in the evenings. He reassures his mother in Brazil not to worry about his safety and is praised by his boss as the 'go-to guy,' going happily about his daily life.

The episode ends with four July 21 plotters attempting to set off their backpack bombs, but when the detonators fail to work properly, they flee, sustaining only minor back wounds. A fifth plotter has cold feet and does not participate.

The episode features Metropolitan Police Service Commissioner Sir Ian Blair, Deputy Assistant Commissioner Brian Paddick, and Assistant Commissioner Andy Hayman frantically discussing the police response to the July 7 bombings at New Scotland Yard.