London: Faber and Faber, [1965]. Octavo, boards. First edition. Retrospective collection of ten stories selected and introduced by Vickers. One story, "Murderer's Duty," appears here for the first time in a book. [Reference: Hubin, pp. 823-824].

London: Faber and Faber, [1950]. Octavo, cloth. First edition, first binding. Second collection of stories about Scotland Yard's Department of Dead Ends, an imaginary department where the evidence from unsolved crimes is stored.