A DOUBLE killing which shocked the village of Upwell, and the high profile investigation which followed, has been featured in a TV documentary. Mother and daughter Constance and Janice Sheridan were found dead at their home at Pringle Bridge in 1999. ITV

A DOUBLE killing which shocked the village of Upwell, and the high profile investigation which followed, has been featured in a TV documentary.

Mother and daughter Constance and Janice Sheridan were found dead at their home at Pringle Bridge in 1999.

ITV's Real Crime: A Killer came Calling, shown on Tuesday, recounted the experiences of the detectives involved.

Double-glazing salesman Kevin Cotterell, from Swaffham, was given two life sentences after admitting the murders.

The discovery of the bodies of the two women, who were whippet breeders, sparked one of the biggest manhunts Norfolk had ever seen.

Led by Det Supt Ian Sturgess and Det Insp Paul Chapman, a team of detectives, police officers and specialists carried out a four-month investigation to track down the killer who had conned his way into the home of the two women before stabbing them to death.

Eyewitness details of a saloon car with a partial number plate seen near the house first brought the killer into the frame. However, it was part of a thumbprint left on the hearth and techniques pioneered by forensic scientists which finally snared him in June, 1999.

Det Insp Chapman, who still works at King's Lynn police station as head of Western area CID, said: "I think it's only right firstly to remember the victims, Janice and Constance, and their family.

"It was a long, and at times frustrating, investigation, which saw resources pooled from right across the force.

"The successful conclusion was down to the hard work, experience and enthusiasm of the entire team of officers and police staff of Norfolk Constabulary, together with support of specialists outside the organisation, such as the Forensic Science Service.

The documentary featured interviews with friends, neighbours, and members of the Sheridans' family, along with forensic science and psychology experts.

Kevin Cotterell was charged with the double murder and admitted the killings at the start of his trial in April, 2000. He has never told police why he killed the women.