Scientists at Hewlett-Packard's crystal lab had tested thousands of specimens, but they'd never seen anything like this. The Mitchell-Hedges crystal skull defied everything they knew about physics and engineering. According to legend, thirteen crystal skulls contained the complete knowledge of our galaxy. Twelve represented worlds where intelligent life existed, while the thirteenth skull connected them all. The story spans from ancient Mars to modern-day laboratories, weaving through lost civilizations and CIA psychic programs. As scientists unravel the truth behind these mysterious artifacts, they discover something even more fascinating about the potential of crystal technology.