Step into the shadows of history's darkest corners and explore ten of the most haunting cold cases the world has ever known. From fog-drenched alleys in Victorian London to remote wildernesses and bustling urban streets, Unsolved takes readers on a chilling journey through true crime mysteries that remain unsolved decades-sometimes centuries-later. Acclaimed historian and true crime author Isabella Hayes unravels the facts, theories, and enduring questions behind each case with meticulous research and gripping storytelling. These are not just stories of violence and vanished victims; they are windows into failed investigations, media obsession, forensic breakthroughs, and the societal fractures that allow evil to go unpunished. Inside this book, you will: Revisit the gruesome slayings of Jack the Ripper and the terror that gripped Victorian LondonAnalyze the baffling disappearance of Malaysia Airlines Flight 370Explore the chilling discovery of bodies along Gilgo Beach linked to the Long Island Serial KillerInvestigate the mystery of JonBenét Ramsey's unsolved murder and the controversies that followedFollow the tragic trail of the Yuba County Five deep into California's mountainsDive into the brutal murder of the Black Dahlia and the web of suspects surrounding herExamine the cryptic letters and taunts left behind by the Zodiac KillerUncover strange patterns and lost opportunities in the case of the Boy in the BoxTrack the eerie reign of the Axeman of New Orleans and his jazz-filled ultimatumPiece together modern forensic evidence and cultural theories surrounding each cold caseUnsolved is more than a true crime book. It's a reminder that time does not erase the need for answers-and that behind every cold case lies a story that refuses to be forgotten.