A new TV documentary about a teenage double murderer from Ipswich is due to be screened on Sunday.

Ipswich Star: Double murder conviction Lorraine ThorpeDouble murder conviction Lorraine Thorpe (Image: Archant)

Fifteen-year-old Lorraine Thorpe, of Clapgate Lane, and Paul Clarke, 41, of Mountbatten Court, Ipswich, killed the teenager’s father Des after he threatened to tell police the pair had previously murdered Rosalyn Hunt, 41.

At the time of their 2010 murder convictions Thorpe was believed to be Britain’s youngest double murderer.

At 10pm on Sunday CBS Reality is due to screen a documentary about Thorpe as part of its Teens Who Kill series.

Among those taking part will be Mrs Hunt’s brother Adrian Provins, Brian Tobin, of Iceni in Ipswich, and former Detective Chief Inspector Rick Munns, who was the officer in charge of the murder investigation.

Ipswich Star: Des ThorpeDes Thorpe (Image: Archant)

Thorpe lived a feral lifestyle after falling in with the street-drinking community through her father Des, 43, who was an alcoholic.

Although she loved her father deeply and cared for him when he was unable to look after himself, she was also said to have been manipulative and cunning. Her case has been described as one of nature versus nurture.

She was sentenced at the Old Bailey in September 2010 to life with a minimum of 14 years’ imprisonment.

The murders occurred after Clarke fell out with Mrs Hunt, a street drinker, in August 2009 over his dog.

Ipswich Star: Double murderer Paul ClarkeDouble murderer Paul Clarke (Image: Archant)

Clarke and Thorpe asked Mrs Hunt about an incident with the dog. She then revealed that she was speaking to the authorities about Thorpe’s welfare.

The pair beat and tortured Mrs Hunt over the course of four days. She was then taken back to her own flat in Victoria Street, Ipswich. Thorpe and Clarke returned four days later.

They then beat, kicked and stamped on Mrs Hunt again, before dumping her body on the bed. She died on August 9.

When Des Thorpe overheard them bragging about the crime, he confronted her and threatened to go to police. On August 10, Clarke and Thorpe smothered him to death at a flat in Limerick Close where they had been staying.

Ipswich Star: Rosalyn Hunt - Lorraine Thorpe and Paul Clarke murder convictionRosalyn Hunt - Lorraine Thorpe and Paul Clarke murder conviction (Image: Archant)

Clarke, 46, was found dead in his prison cell at HMP Whitemoor, Cambridgeshire, in 2014, days before another programme about the murders was due to be aired. He was serving life imprisonment with a minimum term of 27 years.