Crime+Investigation's brand new true crime series sheds new light on some of the most callous and violent crimes in recent years, by examining What The Killer Did Next… Fronted by Life on Mars and Outcast star Philip Glenister, and supported by compelling testimonies from serious crime detectives, defence lawyers and expert criminologists and psychologists [including Emma Kenny and Jane Monckton-Smith] What The Killer Did Next  provides a step change in true-crime storytelling by focusing on the behaviour of killers in the immediate aftermath of a murder  to unpick their mind-set  and understand their motive.