McLagan lifts the lid on a hugely important modern-day problem; an expensive both in terms of money and young lives. After terrorism, the single greatest worry for law enforcement agencies is gun crime and in particular 'black on black' shootings. McLagan has had exclusive access to police files and case histories. Together with his findings from these records are interviews with police officers, victims and their families, witnesses, lawyers and perpetrators of gun crime. The result is a unique and horrifying exposé of the disturbing truth behind this plague on the streets.