The Plot Against Roger Rider
The Plot Against Roger Rider is a 1973 mystery thriller novel by the British writer Julian Symons. The novel takes place both in England and Francoist Spain. It was published in the United States by Harper. Synopsis
Geoffrey Paradine has always lived in the shadow of Roger Rider since they were at school together. Rider is now a successful business tycoon, but suspects that his attractive wife is having an affair. To his surprise it turn out that Paradine is her lover, seeking his revenge. When Rider subsequently disappears and is presume murdered, the finger of suspicion points very heavily towards Paradine. References

Bibliography
 Bargainnier, Earl F. Twelve Englishmen of Mystery. Popular Press, 1984. Miskimmin, Esme. 100 British Crime Writers. Springer Nature, 2020. Murphy, Bruce F. The Encyclopedia of Murder and Mystery. Springer, 1999. Walsdorf, John J. & Allen, Bonnie J. Julian Symons: A Bibliography. Oak Knoll Press, 1996. 1973 British novels
Novels by Julian Symons
British crime novels
British mystery novels
British thriller novels
Collins Crime Club books
Novels set in England
Novels set in Spain