With unparalleled and intimate access, this four-part series follows Manchester's murder detectives over the course of a year as they try to unravel complex cases in dramatic real time.

Even with multiple suspects now in custody, the investigation in to the murder of Daniel Smith, a young homeless man, continues to prove complex for the MIT. Interviews are underway with three suspects thought to have been in the railway arch at the time of the murder.

As forensic work continues at the crime scene, a hammer believed to be one of the murder weapons is discovered hidden in a sleeping bag. DCI Sarah Jones is now treating the disappearance of a Bolton man as murder, but with no body found it's a challenging job.

Sarah has a suspect in custody and forensic teams searching his property have discovered traces of blood in his flat, but who that blood belongs to won't be known until test results come back. Show less