 "The Whitehall Mystery" was a term coined for the discovery of a headless torso of a woman on 2 October 1888 in the basement of the new Metropolitan Police headquarters being built in Whitehall. An arm belonging to the body was previously discovered floating in the river Thames near Pimlico, and one of the legs was subsequently discovered buried near where the torso was found. The other limbs and head were never recovered and the body was never identified. The mutilations were similar to those in the Pinchin Street case, where the legs and head were severed but not the arms. The Whitehall Mystery and the Pinchin Street case may have been part of a series of murders called the "Thames Mysteries", committed by a single serial killer dubbed the "Torso killer". It is debatable whether Jack the Ripper and the "Torso killer" were the same person or separate serial killers active in the same area. The modus operandi of the Torso killer differed from that of the Ripper, and police at the time discounted any connection between the two. Elizabeth Jackson was a prostitute whose various body parts were collected from the river Thames over a three-week period in June 1889. She may have been another victim of the "Torso killer".
