Season 1

In scorching Pima County, AZ, when the sun goes down, crime goes up and the Sheriff’s Department must fight to keep the peace. Detective McLeod races after a hit and run driver and Deputy Stewart has surprising encounters with couples in parked cars.

Pool tracks down a reckless driver whose run from the law sparks a pursuit involving multiple units. Casillas finds himself in a tense standoff where every move counts.

Alcohol plus blistering heat make for a dangerous cocktail in Pima County, AZ.

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It's peak summer in Pima County, and an extreme heat warning scorches the desert by day. But when night falls and the temperatures drop, crime surges-sending Deputy Cassels after reckless drivers and Deputy Stewart into the fight against narcotics on the desert streets.

In Pima County, Arizona, the blistering desert heat leaves tempers short and drivers on edge. Deputy Pool arrests an alleged DUI speeder with kids in the car, while Deputy McCall-Miller pulls over a driver who's in possession of a bowie knife and a pocket full of meth.

With Arizona having some of the loosest gun laws in the country, sheriff's deputies in Pima County constantly confront armed suspects. Deputy Reed deals with a pistol-packing argument at a supermarket checkout line, and Deputy Carter is called to a suspected armed home invasion.

In Pima County, AZ, deputies confront ongoing drug-related activity during their patrols; deputies Stewart and Garza arrest a driver and uncover multiple syringes allegedly loaded with heroin; Deputy McCall-Miller recalls the biggest drug bust of his career.

The darkness of the nighttime desert in Pima County is the perfect cover for crime; Deputy Pool deals with a curious case of identity theft; Deputy Carter clears up a high-speed crash into a cactus, and faced with a tricky traffic stop; Deputy Stewart is forced to make a split-second decision.

The burning summer is finally ending in Pima County, Ariz., but crime doesn't stop; Detective McLeod responds to an attempted abduction, Deputy McCall-Miller stops out with a drunk driver who refuses to admit he's crashed into a utility pole.