Revision #88957

First serialized in Daily Express in seven parts from 6-12 April 1937. Subsequently published in the collection Murder in the Mews and Other Stories (1937). The story was an expansion of an earlier short story The Submarine Plans (1923).

First serialized in Daily Express in seven parts from 6-12 April 1937. Subsequently published in the collection Murder in the Mews and Other Stories (1937). The story is an expansion of an earlier short story The Submarine Plans (1923).