When there's a murder with no suspect, no leads and perhaps not even a body, that's when investigators face their toughest test. Evidence must be gathered. Evidence must be analysed. But evidence is worthless if it can't be pinned to a suspect... Most murder victims knew the person that killed them. That's why homicide, in many cases, is a straightforward crime to solve. Yet 20% of UK homicides are classified as "circumstances unknown".
In this series, Robbie Coltrane reveals eight of the hardest, most complex and baffling murder cases ever to be investigated by British police. The focus of each programme is the trail of evidence: how it was discovered, what it meant and how it became critical to crack the case. With interviews from the lead investigators and forensic specialists, many speaking for the first time, Robbie reveals the astonishing twists and turns of often stranger-than-fiction cases. It is a record of the detectives' art: using skill and determination to solve seemingly unsolvable cases – because the only difference between success and failure is critical evidence
Robbie Coltrane reveals eight of the hardest, most complex and baffling murder cases ever to be investigated by British police.
Robbie Coltrane examines the case of two brothers who murdered a marketing manager on Christmas Eve 2014 using chloroform.
Robbie Coltrane examines the case of Scott Singleton, who murdered a 17-year-old girl after luring her to a bogus job interview.
Robbie Coltrane examines why Graham Backhouse attempted to kill his wife with a car bomb before murdering his neighbour in 1984.
Robbie Coltrane examines the harrowing case of a London landlord who sadistically tortured and murdered two of his tenants.
Robbie Coltrane examines how DNA evidence ended a 30-year hunt for triple murderer and rapist in Wales.
Robbie Coltrane examines the horrific crimes of Dennis Smalley and the tiny clue that led to his capture and conviction.
In 2010, Suzanne Pilley disappeared on her way to work in Edinburgh. Here, Robbie Coltrane reveals the remarkable way her killer was caught.