Power Down — A.J. Marcus

Dryden Lundwurm is getting tired of his life behind a desk at Naga Industries. He needs a break, so he decides to take a few days for himself and go hiking in the Colorado back country. Things don't go as planned when he stumbles on a ghost town controlled by the Tiger clan, a group of tiger shifter ninjas out to gain enough power to steal control of the world from Dryden's family. When the tigers' magic leaves Dryden stuck in human form, he is forced to work in the mine they control. He never anticipated finding love in the form of Geir Liefson, a bear shifter who has been working the mine for months. Dryden must find a way to break the tigers' magic so he can free himself and Geir before they are both worked to death -- or before the mine runs out and the tigers kill them and the other shifters trapped there.