The call that could lead to the killer

Police investigating multiple murders of prostitutes in Ipswich have praised the public's response after 2,000 calls were received in one day. But what are the chances of one of these calls leading to the killer?
One night in May 2002 two poachers fishing illegally on the River Leven in Scotland spotted a bedraggled man starting a fire and then tossing something large and cumbersome onto it.
They thought nothing of it at the time. The man looked like a tramp and they presumed he was just lighting the fire to keep warm.
But when they heard later that the dismembered body of a 19-year-old prostitute, Amy Anderson, had been found on the banks of the Leven they knew they had to call the police.
They were no doubt wary of getting into trouble for poaching, but they called and led detectives to Michael McArthur, a 57-year-old drifter who was jailed for life in 2005 for murdering Amy.
Police found Amy Anderson's killer after a call from the public
It is just such a scrap of information which Det Ch Supt Stewart Gull needs in order to catch the killer of five women from Ipswich whose bodies have been found in the last 10 days on the outs***ts of the town.
"I really do feel for Suffolk Police, they have a mammoth task on their hands," says Wayne Murdock, who retired as a detective superintendent with Gloucestershire Police two years ago.
He led the investigation into the murder of Bristol prostitute Carol Clark, whose body was found in the Gloucester and Sharpness Canal in March 1993.
Her murder remains unsolved but it was not for the lack of trying.
'Forensic value'
Mr Murdock told the BBC News website: "Prostitute murders are very, very difficult to solve in isolation. We looked all across the country looking for possible links with similar cases.
"These days, what with the motorways, you can get to Scotland and back in a day so there is a danger that your killer may not be local."
With Carol Clark, as with the Ipswich murders, the first task was to work out exactly when she had died.
"She went missing on the Friday and was found on the Sunday, but we worked out that she had been kept alive over the weekend, because there was evidence in her stomach of a recent meal," said Mr Murdock.
If they have had five murders, the chances of there being something of forensic value on one of the bodies has to be good
Wayne Murdock, former detective superintendent
But the Carol Clark case was never definitively linked to any other murder and this made it harder to solve.
Mr Murdock said statistically the Ipswich team had a better chance of finding their killer.
"If they have had five murders, the chances of there being something of forensic value on one of the bodies has to be good and DNA has come a long way since Carol Clark," he said.
But he said the answer to the puzzle might lie in one of the hundreds of pieces of information from the public.
'Prioritising'
Suffolk Police said they had received 2,199 calls between 6am and 11pm on 12 December and Det Ch Supt Gull said all the information would be carefully prioritised.
Mr Murdock said this might be key to the success of the investigation: "They will be prioritising lines of inquiry. Some will be high priority and others less so.
"They don't want to discourage people ringing in with information, no matter how innocuous it might sound, even if it has resource implications."
Kevan Roberts was spotted with his victim's bike
Emma Coleman had considered it innocuous when she saw - through a hole in her fence - her neighbour holding a reddish-pink mountain bike in his back garden one day in August 1997.
It was only later, when her neighbour Kevan Roberts went on trial for murdering Norfolk schoolboy Thomas Marshall, that she realised the significance of what she had seen.
She read that Thomas was last seen on a reddish-pink bike and when she called the police they immediately called her as a witness in Roberts' trial. He was jailed for life in 1999.
With the murder of prostitutes there is the added problem that the victims existed in a clandestine world which was hidden away from "normal society".
But Mr Murdock said that, from his experience, there might be a surprising amount of evidence out there about the Ipswich women.
He said: "With Carol Clark, we found a diary which contained a lot of information about her clients, and that may be the case with these girls."
Mr Murdock said he wished the Suffolk detectives all the best and the fact that Carol Clark's murder remains unsolved clearly plays on his mind: "You don't forget certain cases. You retire and hand the file over but you never forget."

Police investigating multiple murders of prostitutes in Ipswich have praised the public's response after 2,000 calls were received in one day. But what are the chances of one of these calls leading to the killer?
One night in May 2002 two poachers fishing illegally on the River Leven in Scotland spotted a bedraggled man starting a fire and then tossing something large and cumbersome onto it.
They thought nothing of it at the time. The man looked like a tramp and they presumed he was just lighting the fire to keep warm.
But when they heard later that the dismembered body of a 19-year-old prostitute, Amy Anderson, had been found on the banks of the Leven they knew they had to call the police.
They were no doubt wary of getting into trouble for poaching, but they called and led detectives to Michael McArthur, a 57-year-old drifter who was jailed for life in 2005 for murdering Amy.
Police found Amy Anderson's killer after a call from the public
It is just such a scrap of information which Det Ch Supt Stewart Gull needs in order to catch the killer of five women from Ipswich whose bodies have been found in the last 10 days on the outs***ts of the town.
"I really do feel for Suffolk Police, they have a mammoth task on their hands," says Wayne Murdock, who retired as a detective superintendent with Gloucestershire Police two years ago.
He led the investigation into the murder of Bristol prostitute Carol Clark, whose body was found in the Gloucester and Sharpness Canal in March 1993.
Her murder remains unsolved but it was not for the lack of trying.
'Forensic value'
Mr Murdock told the BBC News website: "Prostitute murders are very, very difficult to solve in isolation. We looked all across the country looking for possible links with similar cases.
"These days, what with the motorways, you can get to Scotland and back in a day so there is a danger that your killer may not be local."
With Carol Clark, as with the Ipswich murders, the first task was to work out exactly when she had died.
"She went missing on the Friday and was found on the Sunday, but we worked out that she had been kept alive over the weekend, because there was evidence in her stomach of a recent meal," said Mr Murdock.
If they have had five murders, the chances of there being something of forensic value on one of the bodies has to be good
Wayne Murdock, former detective superintendent
But the Carol Clark case was never definitively linked to any other murder and this made it harder to solve.
Mr Murdock said statistically the Ipswich team had a better chance of finding their killer.
"If they have had five murders, the chances of there being something of forensic value on one of the bodies has to be good and DNA has come a long way since Carol Clark," he said.
But he said the answer to the puzzle might lie in one of the hundreds of pieces of information from the public.
'Prioritising'
Suffolk Police said they had received 2,199 calls between 6am and 11pm on 12 December and Det Ch Supt Gull said all the information would be carefully prioritised.
Mr Murdock said this might be key to the success of the investigation: "They will be prioritising lines of inquiry. Some will be high priority and others less so.
"They don't want to discourage people ringing in with information, no matter how innocuous it might sound, even if it has resource implications."
Kevan Roberts was spotted with his victim's bike
Emma Coleman had considered it innocuous when she saw - through a hole in her fence - her neighbour holding a reddish-pink mountain bike in his back garden one day in August 1997.
It was only later, when her neighbour Kevan Roberts went on trial for murdering Norfolk schoolboy Thomas Marshall, that she realised the significance of what she had seen.
She read that Thomas was last seen on a reddish-pink bike and when she called the police they immediately called her as a witness in Roberts' trial. He was jailed for life in 1999.
With the murder of prostitutes there is the added problem that the victims existed in a clandestine world which was hidden away from "normal society".
But Mr Murdock said that, from his experience, there might be a surprising amount of evidence out there about the Ipswich women.
He said: "With Carol Clark, we found a diary which contained a lot of information about her clients, and that may be the case with these girls."
Mr Murdock said he wished the Suffolk detectives all the best and the fact that Carol Clark's murder remains unsolved clearly plays on his mind: "You don't forget certain cases. You retire and hand the file over but you never forget."
Comment