Iron Maiden has been both criticized and praised for their unforgiving presentation of hard rock. This album took them to worldwide stardom, and awoke accusations of backward masking, subliminal messages, and Satanism. Producer Martin Birch dissects the master tapes with the five band members, who discuss the writing and recording of each song, while looking for the 'hidden' elements.

• Nick De Grunwald

• Robby Krieger
• Daniel Lanois
• Tom Petty