Police first heard of Cora's disappearance from her friend, a strongwoman called Vulcana.
Her husband, Dr Crippen, claimed that she had returned to the USA, died, and been cremated, but he changed his story in a later police interview. He said that he'd made up the whole thing up because he was embarrassed: She'd actually run off with some other guy. The house was searched and nothing was found, and the police would have bought the story had Crippen not swiftly fled the country.
When the house (39 Hilldrop Crescent, Camden Road, Holloway, now demolished) was searched again, police found the remains of a body buried under the basement floor. It wasn't a whole body, though: The head, limbs, and skeleton were never found.
Crippen was arrested in Quebec after fleeing to Canada with his mistress, Ethel Le Neve, and executed at Pentonville Prison on 23 November 1910.