Dead Man's Hollow: Nishan Bakunts: Robbie Coltrane examines the most complex and baffling murder cases ever to be investigated by British police, starting in Great Yarmouth.

When a Devonshire fisherman hauled in his nets on July 28 1996, he made a gruesome discovery: among that day's catch was a dead body.

In 1984 a parcel bomb was sent to a 53 year old grandmother living in a tranquil English village.

A 29 year old hairdresser was found brutally stabbed on her doorstep in a quiet suburban street of London.

In March 1984 Hilda Murrell, a 78-year-old distinguished rose-grower, was found dead in woodland near her home town of Shrewsbury.

On 12th May 2014 a human torso was discovered in a suitcase during routine maintenance work on a Birmingham canal.

In mid-November 1993, Derek Severs and his wife Eileen disappeared without a word.

In the summer of 1993 a serial killer stalked London.