South Phoenix rules

"A handsome young New York professor visiting Phoenix to research his new book is brutally murdered. Historian-turned-sheriff's deputy David Mapstone should not be investigating Jax Delgado's death. But Jax has been dating David's sister-in-law Robin, and now she's someone's target, too. Robin's sister Lindsey, strangely distant while working with an anti-cyber terror unit in DC, makes one demand of husband David: protect Robin. This won't be an easy job. City police are suspicious of Robin's role and are trying to pressure her. The Sheriff's Office is in turmoil since Mike Peralta lost…