Robbie Coltrane's Critical Evidence

In 1984 a parcel bomb was sent to a 53-year-old grandmother living in a tranquil English village. She died of horrific injuries. No one understood why it had happened. The only evidence detectives had was the bomb itself.

A 29-year-old hairdresser was found brutally stabbed on her doorstep in a quiet suburban street of London. A recording of a threatening phone call seemed to suggest the motive, but every lead comes to a dead end.

Hilda Murrell, a 78-year-old distinguished rose-grower, was found dead in woodland near her home town. Despite a huge investigation by the British police, detectives failed to find her killer and conspiracy theories muddied the waters still further.

On 12th May 2014 a human torso was discovered in a suitcase during routine maintenance work on a Birmingham canal. With no useable DNA and no other body parts, the case initially seemed impossible to crack.

In November 1993, Derek and Eileen Severs disappeared without a word. When police spoke to their son, Roger, he insisted they were on holiday. However, there was no evidence of this apparent trip, and Roger was soon arrested on suspicion of murder.

An old carpet dug up by workmen in a Cardiff back garden in 1989 was the beginning of a case that would push the boundaries of forensic science. The carpet contained human bones - but whose?

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.