This four-part series follows Manchester's murder detectives over the course of a year as they try to unravel complex cases. In this episode, an investigation commences after a burnt body is discovered in a homeless camp under railway arches close to the city centre. The team has little to go on with no CCTV or witnesses, but hopefully extensive forensic work will lead to some clues. A second case which comes into MIT centres on a female victim of a petrol bomb attack in her own home. The suspected attacker, her brother, goes on the run armed with more petrol bombs, inspiring police to launch a full-scale manhunt.