By Debbie Emery - Breaking Celebrity News Reporter

Even with the outstanding breakthroughs in forensic science and investigative techniques, there still remains countless gruesome murders that have remained unsolved for decades, and sometimes even centuries.

On Tuesday, it was revealed that never before seen journals kept by Lizzie Borden’s lawyer could shed new light on the bloody hatchet murder of her father and step-mother 120 years ago, and now Breaking Celebrity News is taking a look back at the most infamous cold case murders from history that still puzzle crime sleuths and investigators around the world.

Jack the Ripper: The legend of Jack the Ripper has been told in countless books, films, TV series and stage shows, but the global fascination with the ‘Whitechapel Murderer’ since 1888 hasn’t brought investigators any closer to solving the mystery of who slit the throats and grossly mutilated at least five (and possibly as many as 11) prostitutes in Victorian London. The nickname stemmed from the bodies being literally ripped apart with a sharp knife, and three even had their internal organs removed, prompting speculation that the killer possessed anatomical or surgical knowledge. The infamous ‘From Hell’ letters were sent to numerous local papers and Scotland Yard investigators by the killer to taunt their lack of success in catching him, and in one he used the name ‘Jack the Ripper,’ which has stuck for more than a century since. Another grisly mailing included half of a preserved h