In Ohio. Officers find themselves pitted against a lone gunman holed up in a suburban home; the nerve of a rookie cop is tested when a routine stop on the highway goes horribly wrong.

In Florida, a domestic dispute turns into a hostage situation with children's lives at stake; in Virginia, a vehicular accident turns into a multiple murder with armed killers on the run; in South Carolina, a disturbance at a liquor store leaves an officer fighting for his life.

In Georgia, two police officers respond to a domestic disturbance that ends in tragedy; in New York, a house fire turns into a murder investigation; in Oklahoma, the search for a known sex offender builds to a shocking conclusion.

In Ohio, a police officer tracks down an armed carjacker and comes under heavy fire; in Washington, a stabbing in broad daylight forces the police to take decisive action; in Georgia, a routine traffic stop results in an officer being shot and fighting for his life.

In Ohio, a breakup turns deadly; in Texas, a traffic stop puts a child's life at risk; in Oregon, a killer on the run leaves a state trooper fighting for his life.

In Albuquerque NM, a man with an AK-47 steals a police car and fires at police during a 16-mile citywide chase; in Iowa, a home invasion call escalates into something far more terrifying.

In Iowa, a dangerous felon steals a truck and rams everything in his path; in Iowa, on a freezing winter night, a lone officer is attacked by a crazed half naked man; in California, at a county jail, a gunman fires at unarmed officers, leaving one fighting for his life.

In Arizona, a detective leads his heavily armed team on a search warrant but ends up in the firing line himself; in Kentucky, a routine traffic stop turns violent as the suspect makes a risky getaway; in New York, a knife-wielding man draws police into a dangerous foot chase.

In Georgia, police hunt for two suspects who are responsible for a string of armed robberies; in Texas, an undercover cop foils a murder-for-hire plot; in Oklahoma, a known felon tries to force an officer off the road, stopping at nothing to escape arrest.

In Colorado, on New Year's Eve, a domestic dispute ends in tragedy when two deputies are trapped with a gun-wielding suspect; in Iowa, a high-speed pursuit escalates to a gruesome conclusion.