In 1986, Octopus Books published an untitled omnibus edition of two Agatha Christie's novels. The book was released on behalf of W. H. Smith and was available in both hardcover and paperback formats. The book comprised the novels: Murder at the Vicarage and The Mirror Crack'd from Side to Side. The omnibus itself did not have a unique title and only listed the titles of the 2 component novels on its cover.
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