Christopher Donovan, his brother Philip, and friend Richard were in high spirits walking home in the early hours one Saturday morning when they were attacked by thugs. The gang kicked and punched Christopher, knocking him to the ground, and his lifeless body was then hit by a passing car. A painstaking investigation followed to identify the three killers, using reconstructions and witnesses.

Nimpha Ong and Ahmed Al-Haddad were tenants of 92-year-old Bridget "Bridie" Skehan, a wealthy former socialite, at her Bayswater flat when they brutally beat her to death in December 2002, in a bid to get their hands on her fortune. When the pair were arrested, they blamed each other for the crime in an attempt to avoid conviction.