Del Rio, California, a once-thriving Central Valley farm town, is now filled with run-down Dollar Stores, llanterias, carnicerias, and shabby mini-marts that sell one-way bus tickets straight to Tijuana on the Flecha Amarilla line. It’s a place you drive through with windows up and doors locked, especially at night—a place the locals call Cartel Country. While it’s no longer the California of postcards, for local District Attorney Callie McCall, her dying hometown is the perfect place to launch a political career and try to make a difference.

But when the dismembered body of a migrant teen is found in one of Del Rio’s surrounding citrus groves, Callie faces a career make-or-break case that takes her on a dangerous journey down the violent west coast of Mexico, to a tropical paradise hiding a terrible secret, and finally back home again, where her determination to find the killer pits her against the wealthiest, most politically connected, most ruthless farming family in California: her own.