The book was written in oral history format and based on interviews with former Iron Maiden members Paul Di'Anno (singer, 1978-1981), Dennis Stratton (guitarist, 1979-1980) and the producer of their self-titled debut Wil Malone.

Prato also interviewed several other music figures for the book including Biff Byford (Saxon singer), Udo Dirkschneider (former Accept singer), Kim McAuliffe (Girlschool singer/guitarist), Brian Tatler (Diamond Head guitarist), Lips (Anvil singer/guitarist), Doro (Doro singer), Scott Ian (Anthrax guitarist), Charlie Benante (Anthrax drummer), David Ellefson (Megadeth bassist), Dave Lombardo (former Slayer drummer), Mike Portnoy (former Dream Theater drummer), Richard Christy (Death and Iced Earth drummer), Glenn Tipton (Judas Priest guitarist), Pete Way (former UFO bassist), and more.