Cast No Shadow
Investigating an attempted abduction and protection racket, DS Boulton and DC Carver travel up to Manchester on the trail of a suspect. Getting into trouble with a local gang, they find themselves rescued by none other than Frank Burnside, who left Sun Hill in mysterious circumstances five years ago. Now working in a ""security"" firm with local gangster Phil Ryan, Burnside is less than pleased when Boulton discovers and reveals his affair with a rival's wife, making him a marked man. At the request of the NCS, Boulton and Carver take Burnside back to London in handcuffs.