When an elderly pawnbroker is murdered in the London parish of Paddington, a young, down on his luck writer is accused of the crime. But then it's found the pawnbroker had had in his possession an extraordinary South African diamond worth over eighty-thousand pounds -- a diamond that's now missing. It falls to Melky Rubenstein to unravel the mystery and prove the young man's innocence. But what is the significance of the Spanish manuscript? What part do the Chinese medical students play? And what about the mysterious Mr. Mori Yada? Find the answers in The Orange-Yellow Diamond!...Joseph Smith Fletcher (7 February 1863 - 30 January 1935) was an English journalist and author. He wrote more than 230 books on a wide variety of subjects, both fiction and non-fiction, and was one of the most prolific English writers of detective fiction.Early life and educationFletcher was born in Halifax, West Yorkshire, the son of a clergyman. His father died when he was eight months old, and after which his grandmother raised him on a farm in Darrington, near Pontefract. He was educated at Silcoates School in Wakefield, and after some study of law, he became a journalist.Writing careerAt age 20, Fletcher began working in journalism, as a sub-editor in London. He subsequently returned to his native Yorkshire, where he worked first on the Leeds Mercury using the pseudonym A Son of the Soil, and then as a special correspondent for the Yorkshire Post covering Edward VII's coronation in 1902.Fletcher's first books published were poetry. He then moved on to write numerous works of historical fiction and history, many dealing with Yorkshire, which led to his selection as a fellow of the Royal Historical Society.Fletcher wrote several novels of rural life in imitation of Richard Jefferies, beginning with The Wonderful Wapentake (1894).Michael Sadleir stated that Fletcher's historical novel, When Charles I Was King (1892), was his best work.In 1914, Fletcher wrote his first detective novel and went on to write over a hundred more, many featuring the private investigator Ronald Camberwell.Fletcher is sometimes incorrectly described as a "Golden Age" author, but he is in fact an almost exact contemporary of Conan Doyle. Most of his books considerably pre-date that era, and even those few published within it do not conform to the closed form and strict rules professed, if not unfailingly observed, by the Golden Age writers.Personal lifeHe was married to the Irish writer Rosamond Langbridge, with whom he had one son, Rev Valentine Fletcher, who has subsequently held various ministries across Yorkshire, including Bradford and Sedbergh.DeathFletcher died in 1935, one week short of his 72nd birthday. He was survived by his wife Rosamond and son Valentine.