A mystery celebrity will provide an introduction to the reissue of Michael Jackson's memoir. Harmony Books, an imprint of Random House Inc., will publish the new edition of “Moonwalk” in October with an announced first printing of 100,000. The original text, released in 1988 by Doubleday, sold about 500,000 copies. The celebrity was described by Harmony as “a well-known figure in the entertainment industry who was close to Michael.” The company said it will soon reveal which entertainment figure close to Jackson will write a new introduction. The memoir was acquired in the mid-1980s by then Doubleday executive Jacqueline Kennedy Onassis and has been out of print for more than a decade. Proceeds will go to the Michael Jackson Family Trust, and to various charities supported by the singer, who died last month.