Despite Organized Crime Division (led by the dashing DCI Cazenove) seeming to have control of the London streets, something sinister is afoot in "Whitechapel". After a spate of gruesome killings and maiming, DI Chandler (now permanently stationed at Whitechapel) and his team are tasked with solving them. Buchan claims the crimes replicate those committed by the infamous Kray twins back in the 1960s. Miles is uneasy; he warns Chandler if these incidents are related to the Krays he's best to stay away - it's serious. Buchan informs them if his theory is right, two more iconic Kray murders will be recreated - George Cornell and Jack 'The Hat' McVitie and doesn't think that Chandler's suspect, gangster Steven Dukes is the killer. Buchan believes they are looking for someone more sinister than a villain on the take. Buchan tells Chandler the victims are chosen from those who gave evidence against the Krays and that they are killed in the manner of their testimony. He believes former Kray associate, Slasher Daneford will be next - he gave evidence on Jack 'The Hat' McVitie's killing. For Miles, this is sounding all too familiar, his father, 'Freddie the Dip' was a former Kray associate who disappeared in the sixties. To appease Buchan, Miles and Chandler watch Slasher whilst the rest stake out Dukes at his club. Despite Buchan's warnings, Chandler & Miles are unable to save Slasher but with Dukes not having moved all night - if he didn't kill Slasher - who did? A Kray copycat killer appears to be on the loose, just as Buchan predicted.