[pdm55]

Not my "cup of tea", but certainly a record holder is Agatha Christie whose 66 detective novels and 15 short-story collections have sold over two billion copies, an amount surpassed only by the Bible and the works of William Shakespeare.

In years past, my preferred crime writer was Walter Mosley, who wrote the Easy Rawlins series among his output of 70 novels. A Jewish African-American, he was at one time a computer programmer. He turned to novel writing at 35 years of age.

[ghaff]

Another prolific English author (of mostly children's books) was Enid Blyton who wrote somewhere between 700 and 800 books.