Marcus F. Griffin (Author) Would You Sell Your Soul for Rock ’n’ Roll? During the fateful year of 1981, the five talented musicians of the rock band Entropy faced a terrifyingly powerful, otherworldly entity called the Gray Man. This dangerous being, a paranormal force beyond their understanding, brought the members of Entropy to the edge of fame, but ultimately tore them apart. Marcus F. Griffin recounts the chilling tale of the band’s true, first-hand encounters with the Gray Man. Confronted over and over again by disturbing dreams, monstrous shadows, and many more frightening events, Entropy’s lives are changed forever. Playing with the Devil chronicles how a demonic apparition takes these five young men on one of the greatest paranormal journeys anyone has ever experienced.