The Rayner-Slade Amalgamation is a mystery novel by J. S. Fletcher, first published in 1922. The story follows Marshall Allerdyke, a manufacturer who investigates the suspicious death of his cousin, James, after receiving an urgent telegram. As Marshall delves into James's recent business dealings involving valuable jewels and a mysterious princess, he uncovers a complex web of theft, murder, and manipulation. Fletcher, a prominent figure in early 20th-century detective fiction, crafts a narrative that exemplifies the intrigue of the genre during its Golden Age.
