The Death Dealers is a 1958 mystery novel by American writer Isaac Asimov (later republished as A Whiff of Death, Asimov's preferred title). It is about a university professor whose research student dies while conducting an experiment. The professor attempts to determine if the death was accident, suicide or murder. The novel was Asimov's first novel-length mystery (non-science fiction) story. He had already published several mystery short stories, later collected as Asimov's Mysteries (1968), in some of which the mystery was solved by applying known science. Asimov's previous two novels from his Robots series combined mystery with science fiction. Source: Wikipedia (en)