Masks of Mayhem (Doc Graystone Adventures Book 3)

Mexico City, 1932. Doc Graystone’s tropical vacation is cut short when brutes wearing magical masks hijack a truck full of gold. Graystone’s investigation leads him to an archeological site where he uncovers the truth behind the masks’ power. If Graystone isn’t able to stop a crime lord from using this power to complete an ancient ritual, a new level of evil will be unleashed on the world.