Narrating the Devil's random musings on key dates through history, The Devil's Diaries reveals Satan's part in such things as the Fall; musical moments at the crossroads; the invention of the tetrapak, making work for idle hands; small print; Faust; decorating hell circle by circle; the joy of getting all the best tunes; and, lawyers. The Dark One reveals his disquiet at the way some of this finest ideas have been hijacked and credited elsewhere; and confesses his frustration that much of his best work goes unappreciated. We also gain extraordinary insights into his private thoughts, and discover that even Satan gets depressed.