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Author of the Rex Brandon, Jungle Hunter adventure series; author of science fiction and westerns.

Author of mystery; several stories featuring Professor Moriarty, arch-enemy of Sherlock Holmes, and the WAR, INC. espionage thriller series.

Author of science fiction, most notably the long-running Dumarest of Terra series.

Popular SF and crime novelist, whose credits include novelizations of A Hard Day’s Night, Gerry Anderson's UFO,  and Hammer horror films.

Author of psychological thrillers like The Little Grey Man and When Shall I Sleep Again?; and horror classics like Murders Macabre.

Author of mystery and horror.

Mystery and horror.

Mystery and horror.

Author of mystery and horror.

Author of mystery and horror.