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The Rynox Murder Mystery

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First published in 1930, a classic Golden Age crime novel, and the first time Philip MacDonald wrote a crime novel without a detective.

‘Rynox’ is at that point where one injudicious move, one failure of judgement, one coincidental piece of bad luck will wreck it. So why would anyone send more than a million pounds in one-pound notes to Mr Salisbury of the Naval, Military and Cosmopolitan Assurance Corporation? Who would shoot F.X. Benedik, the senior partner of the firm, through the head in his study? And where is the choleric Mr Marsh, who had an appointment with F.X. on the night of his death? Rynox is on the edge of big things. But the edge of big things is a narrow edge. And narrow edges are slippery . . .

Philip MacDonald’s Rynox is an engrossing murder mystery set in the business world, a crime novel without a detective in which murder and big business are inextricably combined. Beginning with the Epilogue and ending with the Prologue, it is a subtle and exciting book by one of the greatest masters of the mystery story.

205 pages, Kindle Edition

Published January 1, 2026

About the author

Philip MacDonald

148 books17 followers
Philip MacDonald (who some give as 1896 or 1899 as his date of birth) was the grandson of the writer George MacDonald and son of the author Ronald MacDonald and the actress Constance Robertson.

During World War I he served with the British cavalry in Mesopotamia, later trained horses for the army, and was a show jumper. He also raised Great Danes. After marrying the writer F. Ruth Howard, he moved to Hollywood in 1931. He was one of the most popular mystery writers of the 1930s, and between 1931 and 1963 wrote many screenplays along with a few radio and television scripts.

His detective novels, particularly those featuring his series detective Anthony Gethryn, are primarily "whodunnits" with the occasional locked room mystery. His first detective novel was 'The Rasp' (1924), in which he introduced his character Anthony Gethryn.

In later years MacDonald wrote television scripts for Alfred Hitchcock Presents ('Malice Domestic', 1957) and Perry Mason ('The Case of the Terrified Typist', 1958).

He twice received an Edgar Award for Best Short Story: in 1953, for 'Something to Hide', and in 1956, for 'Dream No More'. Indeed many critics felt that his short story writing was superior to his novels and they did win five second prizes in the annual contests held by 'Ellery Queen's Mystery Magazine'.

He also wrote under the pseudonyms Oliver Fleming, Anthony Lawless, Martin Porlock, W.J. Stuart and Warren Stuart.

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