Ancient magic, hidden worlds and bloodthirsty tribes: there is only one Luke Challenger, and he's back for a third, unforgettable adventure. Having braved the Lost World and travelled 20,000 leagues beneath the sea, Luke Challenger is back, and facing his hardest challenge yet...The terrifying Sons of Destiny are closing in on the location of the legendary Spear of Destiny - an ancient weapon that grants the power of invincibility, which would help...