DAVE MUSTAINE's 'In My Darkest Hour' Memoir Gets Official Release Date; Book Cover Unveiled

Grand Central Publishing’s recently launched Da Capo imprint has set a September 8, 2026 release date for MEGADETH mainman Dave Mustaine’s next memoir, “In My Darkest Hour”. The book will detail Mustaine’s “gnarly” treatment after he was diagnosed with squamous cell carcinoma at the back of his tong…