Jim Berkenstadt is the Rock And Roll Detective®. A true Sherlock Holmes, Berkenstadt uncovers the lost history and mysteries hidden within decades of popular music. An international authority on The Beatles, he has co-authored three other books: Black Market Beatles: The Story Behind The Lost Recordings; Nevermind Nirvana; The Beatles Digest; and he edited John, Paul & Me: Before The Beatles. Berkenstadt has consulted to The Beatles and the Estate of George Harrison on numerous film and album projects. He lives in Wisconsin.