The Thames Torso Murders, also known as the Thames Mysteries or Embankment Murders, refer to a series of unsolved killings in London between 1887 and 1889 in which the dismembered bodies of women were recovered from the River Thames and surrounding areas. Police at the time filed four incidents as belonging to the same series: the Rainham Mystery, the Whitehall Mystery, the murder of Elizabeth Jackson, and the Pinchin Street Torso Murder. Additional, less firmly linked cases dating from 1873 to 1902 have also been associated with the series by later researchers.
In the Rainham Mystery (May–June 1887), a torso and subsequent body parts of a woman aged approximately 27–29 were recovered from the Thames near Rainham and other locations. A surgeon concluded that the dismemberment had been performed skilfully and soon after death, but no cause of death could be established, and the inquest jury returned a verdict of "Found Dead." The Whitehall Mystery (September–October 1888) involved remains found at three sites in central London, including the future site of Scotland Yard; a right arm found earlier in Pimlico was matched to the torso by police surgeon Thomas Bond. In the case of Elizabeth Jackson (June 1889), body parts recovered across multiple London locations were identified as belonging to a homeless woman from Chelsea who was approximately eight months pregnant. Her boyfriend was arrested on suspicion of murder but was cleared after it was shown he had left London before Jackson was last seen alive; no other suspect was identified. The Pinchin Street Torso Murder (September 1889) involved the headless and legless torso of an unidentified woman found under a railway arch in Whitechapel; extensive bruising suggested she had been severely assaulted shortly before death, and her abdomen had been mutilated in a manner some compared to the contemporaneous Whitechapel murders, though senior police officers of the time, Chief Inspector Swanson and Commissioner Monro, did not consider it connected to those killings and instead linked it to the other Thames torso cases.
Contemporary and later commentators have debated a possible connection to the Jack the Ripper murders occurring in the same period, but the Metropolitan Police at the time, and later experts including Stewart Evans, Keith Skinner, Martin Fido, Donald Rumbelow, and Sarah Bax Horton, have generally discounted a link due to differing modus operandi — the Torso Murderer dismembered victims, whereas the Ripper's crimes involved progressive abdominal and genital mutilation without full dismemberment.
Further cases sometimes associated with the series, though not part of the police's original four, include the 1873–74 Battersea Mystery, the 1884 Tottenham Court Road and Bedford Square Mystery, a 1886 Paris case, and a 1902 case in Lambeth. None of these associated cases were solved either.
In January 2026, the case was reexamined in a BBC documentary series, in which historians Lucy Worsley and Sarah Bax Horton proposed a Thames waterman as a possible suspect, a theory also advanced in Bax Horton's 2024 book on the subject. No person has been charged in connection with any of the murders.