CHESHIRE Constabulary has 18 unsolved murders on its books, dating back more than 50 years.
A Freedom of Information response cites the outstanding murder case of prostitute Lynne Trenholm, 29, stabbed to death at a massage parlour in Boughton in 1991.
The case of 17-year-old Brenda Evans found dead in a remote rural location near Poulton in 1977 also remains unsolved.
And no-one was ever caught for the murder of dog walker Julia Webb, 52, found dead in a wooded area off Kennel Lane, Cuddington, in 1998 despite coverage on BBC’s Crimewatch.
Also unsolved is the murder of ex-Chester City footballer Alan Morris, 44, outside his home in Walker Street, Hoole. His common-law wife, Jayne Rowe, was cleared of stabbing him in the heart in the early hours of New Year’s Eve 1998.
Cheshire police are also still tracking the killers of children Tim Parry, 12, and Johnathan Ball, three, who died in a suspected IRA bomb blast at Warrington in 1993.
In 2007, Cheshire police cracked what was then the county’s oldest unsolved murder – although the suspect was dead by then.
Fingerprints were found on a cash box when Walter Albert Humphrey of Knutsford, 71, was murdered in 1953 while working at a garage.
Forty years later the prints were added to a national electronic database.
A case review showed a match between the recovered fingerprints and a known criminal.
A spokesperson said: “All Cheshire unresolved cases are subject to a two year rolling periodic review by the major crime review team. Cases are never closed and where viable lines of investigation are identified by review processes, the Force Major Investigation Team is engaged to pursue them.”