Six sacred stones. Matthew Reilly. 2008.

Unlocking the secret of the "Seven Ancient Wonders" was only the beginning. The world is in mortal danger.

For Jack West Jr and his loyal team heroes, the challenge now is to set six legendary diamonds known as "the Pillars" in place at six ancient sites around the world before the deadline for global destruction arrives. The locations of these sites, however, can only be revealed by the fabled Six Sacred Stones.

With only the riddles of ancient writers to guide them, and time rapidly running out, Jack and his team must fight their way past traps, labyrinths, and a host of deadly enemies-knowing that this time they cannot, must not, will not fail.