Sins of the Salton Sea (Sins of the Salton Sea #3)

The story of what drove ex-criminal Wyatt into retirement - a heist that went pear-shaped, resulting in his family's death - comes into focus as the ex-con finds himself on the run from a deadly cult called the Sons of the Salton Sea. Intent on recapturing Silver, a young boy with a mysterious connection to the cult, Wyatt's brother learns why they're obsessed with the kid when he discovers the cult leader is actually Silver's father.