S6 Ep3: The Shepherd's Bush Massacre

In August 1966, three unarmed London police officers pulled over a suspicious car on Braybrook Street in Shepherd's Bush in West London. Within minutes, all three were dead—shot in cold blood by three career criminals who'd rather kill than go back to prison. The murders shocked Britain and sparked a months-long manhunt for Harry Roberts, who managed to evade capture while his face was plastered across every newspaper in the country.