The Sinister Swindler

In this book of the Heller series, smooth talking Cory Teale charms his way into the confidence of the Ute Indian tribe. He even secures a power of attorney and the responsibility for investing the tribe's money. Heller's friend, who previously handled the tribe's investments, determines Teale is too good to be true and grows suspicious. Heller is asked to check the guy out. Assuming it would be a simple investigation, Heller finds more than he expects and gets himself and his girlfriend marked for death...