Boom-BOOM! is Wally Duff’s first mystery/thriller novel and the first book of the Hamlin Park Irregulars series. To date, he has written six more novels. The next book in the series, Déjà Boom! will be released in the late fall. Wally and his wife, Mindy, live in Omaha, Nebraska with their Bichon Frise, Bentley. In addition to writing books, Wally is a practicing ENT physician in Omaha.