A suspect's car going 45 miles per hour drags a Pembroke Pines PD officer behind it; a domestic dispute turns into a shootout, leaving one officer fighting for his life; a routine traffic stop turns into a car chase.
In Wisc., Rhinelander PD attempts to foil a murder-for-hire by going undercover: meeting the suspect as a hitman. In Colo., law enforcement from two counties tries to stop a runaway semi-truck before it devastates the small town of Brush.
In Ohio, police try to rescue a woman trapped in a sinking car which puts an officer's life in danger. In Florida, a high-speed pursuit ends in a swamp, where the suspect shoots at police and escapes; a specialized search unfolds.
Police race to an armed robbery and face a hail of shotgun pellets; a gas explosion lifts the roof off an apartment building, engulfing officers in a fireball; in Georgia, a man fights for his life in a wrecked SUV.
A K-9 unit tracks an armed murder suspect through an Oklahoma residential area, where he ambushes police; in Texas, police officers respond when a couple falls into an icy lake, and one officer risks his own life to go into the water.
In New Hampshire, FBI agents uncover a terror plot aimed at the heart of justice. In Florida, a fleeing suspect turns amphibian in a watery maze. And in Arizona, a man lies unconscious in a blazing wreck.
In Wisconsin, police respond to a burglary in progress, but the suspects flee; a woman in Texas makes a desperate call to 911 from inside a burning building; the streets turn deadly when the driver of a stolen vehicle tries to get away.
