Dancers in Mourning is a crime novel by Margery Allingham, first published in 1937, in the United Kingdom by Heinemann, London and in the United States by Doubleday Doran, New York City; later U.S. versions used the title Who Killed Chloe?. It is the eighth novel to star the mysterious Albert Campion, aided as usual by his butler/valet/bodyguard Magersfontein Lugg.