Book 2 in the Hunter Chronicles series. Ethan, Steph and their new friend Lachie, are off again, this time following the cryptic trail left by the black-hearted bushranger brothers, Thomas & John Clarke. From forbidden caves and crumbling ruins, to spooky grave-yards and ancient burial grounds, the treasure-seekers delve into secret compartments and even more secret family histories in the hunt to solve a century-old mystery. But who are the mysterious figures dogging their every move? And what does any of this have to do with ancient Vikings? The race is on. Join Hunter and his friends as they blast-off on the treasure-hunting rollercoaster ride of a lifetime to discover what matters most in life.