Beckie and Ian accept a standard "cost plus half-spoils" contract to prevent a Mexican prosecutor from receiving a Father's Day present he doesn't want: his daughter's head, gift-wrapped.
Both the girl and the drug cartel-the one the prosecutor's working to eliminate-provide lots of opportunity to save her life. One of those 'opportunities' may allow the "half-spoils" clause to go into effect while exposing a blackmail operation that has few qualms about under-age prostitutes.
Sonora state in Mexico provides a beautiful setting for action that hardly stops for the life of this contract.
Low Places, the seventh book in the Rebecca Jamse Thriller series, is set in an approximation to the real world.