Michael Gruber (born October 1, 1940) is an American author.
He worked as a cook, a marine biologist, a speech writer, a policy advisor for the Jimmy Carter White House, and a bureaucrat for the United States Environmental Protection Agency (EPA) before becoming a novelist.
Gruber was the ghostwriter of the popular Robert K. Tanenbaum series of Butch Karp novels starting with No Lesser Plea and ending with Resolved.
[1] After the partnership with Tanenbaum ended, Gruber began publishing novels using his own name.
The Book of Air and Shadows became a national bestseller shortly after its release in March 2007.