Dogged investigator Allegra Dill returns to her border-town Texas home after her sister is murdered. What begins as a search for a killer turns into an all-consuming fight to bring her corrupt hometown to its knees.

When the Los Angeles County’s Sheriff dies, an arcane rule forged back in the Wild West thrusts the most unlikely man into the job: a fifth-generation lawman, more comfortable taking down bad guys than navigating a sea of politics, who won’t rest until justice is served.