"Against all the odds, Jack West Jr found the Three Secret Cities but at a heartbreaking cost. His beloved daughter Lily, it appeared, was slaughtered by Sphinx in a cruel ancient ritual. With his rivals far ahead of him, Jack must now get to one of the five iron mountains - two of which have never been found - and perform a mysterious feat known only as 'The Fall'. Although what is this object on the moon that is connected to it? Amid all this, Jack...

Jack West Jr has made it to the Supreme Labyrinth. Now he faces one last race - against multiple rivals, against time, against the collapse of the universe itself - a headlong race that will end at a throne inside the fabled labyrinth. But the road will be hard. For this is a maze like no other: a maze of mazes. Uncompromising and complex. Demanding and deadly. It all comes down to this. For it ends here - now - in the most lethal and dangerous place...