Sarah Bax Horton is a true crime writer and researcher who specializes in historical biographies. She is known for her work on the Whitechapel Murders, including her book One-Armed Jack: Uncovering the Real Jack the Ripper which re-examines the Jack the Ripper case and proposes that Hyam Hyams, a cigar maker from Whitechapel, was the Ripper. Horton's hypothesis is based on a match between Hyams and criminal profiles, as well as eyewitness accounts and his medical files.