Who is the author of the 39 clues?

Answer 1

Rick Riordan wrote Maze of Bones (Book1)

Gordon Korman wrote One False note (Book2) and Emperor's Code (Book8)

Peter Lerangis wrote Sword Thief (Book3) and Viper's Nest (Book 7)

Jude Watson wrote Beyond the Grave (Book4) and In Too Deep (Book6)

Patrick Carman wrote Black Circle (Book5)

Linda Sue Park wrote Storm Warning (Book9)

Margaret Peterson Haddix wrote Into the Gauntlet (Book10)

Answer 2

There isn't a single author of the 39 clues books. The first book was written by Rick Riordan who also wrote the Percy Jackson Series. Other books in the series are written by Jude Watson and Gordon Korman.