The Carpenter’s Mate by Noah Harris

What’s the first rule of joining the mile-high club? Assume the position and hold on tight! Dean and Mikael are about to find out how true that is…before things get bad… fast!
Dean and Mikael are all too aware that their struggles are not over. Somewhere out there the last crystal remains undiscovered. When Lucille brings knowledge of their next step, they must embark on another journey. In the heart of the desert, near the fabled Cradle of Humanity, Dean searches for answers to his druidic heritage.
With Mikael at his side, Dean will be forced to face the bloodstained past of his people. In the unforgiving desert, with a mysterious force guarding long lost secrets, the druid and the werewolf, along with Dante, Apollo, and Lucille, seek answers but they didn’t expect to be given the next step in the plan of an old enemy.
With every answer, ten questions take its place. As the secrets are unearthed, giving Dean many of the answers he seeks, a greater danger presents itself.