In 1977, the World's End pub in Edinburgh was the last place anyone saw teenagers Helen Scott and Christine Eadie. Decades later, the man responsible for their murders, a serial killer who evaded justice for over 30 years, was finally brought to account. This chilling episode of World’s Most Evil Killers reveals how Sinclair, already imprisoned for other heinous crimes, was linked to this cold case and almost walked free. Dive into the disturbing details and shocking revelations of this true crime story that will leave you breathless. Subscribe for more unsettling true crime stories: youtube.com/c/RealCrime