Nightmare is a 1932 thriller novel by the Irish-born writer Lynn Brock.Hubin p.49 It is an inverted detective story, and a stand alone work for an author best known for his series featuring the Golden Age detective Colonel Gore.Reilly p.189
Synopsis
Following a nervous breakdown, a struggling young novelist reaches the end of his tether. He sets out to murder those tormenting him.
References
Bibliography Hubin, Allen J. Crime Fiction, 1749-1980: A Comprehensive Bibliography. Garland Publishing, 1984. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.