Renowned criminologist Professor David Wilson has created a new 'murder map' of 1,000 unsolved cases in the UK, including some of the gimmest crimes on record so far View 6 Images Norah Irene Bartlett was found dead in a lane near her home in Rhydings Park Road, Swansea on the Thursday night of 18 November 1943. (Image: WalesOnline/Gayle Marsh)

A serial killer who was never detected by police may have been pinpointed by a new "murder map" of 1,000 unsolved cases in the UK. The map shows that two women were strangled in Cardiff in strikingly similar crimes, which were committed just a few weeks apart in 1943. ‌

But perhaps because the murders were investigated during wartime blackouts, it appears that detectives didn’t link the crimes at the time, and both remain unsolved to

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