You inhale. You exhale. And you stop.Over 200 years have passed. You're still in Philadelphia. But not as you know it.When three friends discover a mysterious grey power, little do they know that it will transport them two centuries into the future... Shocked and shaken, they soon find that their beloved city is anything but home. Once a bustling metropolis, it's now isolated and recovering from an unknown disaster. Identification tags replace names. The filthy rich own and run the police. And the dirt poor are forced to fight for survival. Can this band of outlaws save their city to save their lives? Weaving a rip-roaring dystopian sci-fi tale, Gertrude Barrows Bennett's 'The Heads of Cerberus' is the perfect read for fans of 'Back to the Future'.-