In Tulsa, a key witness denies knowing anything about a brutal homicide until confronted with evidence that proves otherwise; in Dallas, a suspect shocks detectives with a confession they didn't see coming.

A confrontation turns deadly in Memphis, Tenn.; in Cincinnati, a single mother is torn between work and home; in Tulsa, Okla., a family dispute takes a dark turn; in Atlanta, an interrogation room interview turns emotional.

In New Orleans, a robbery takes a rookie months to unravel; in Phoenix a first-time detective with only one clue traces a random fender bender that sparks a horrible turn of events; in Atlanta, the new guy tracks the suspects in a drug deal.

In Tulsa, a shooting in a motel parking lot leads investigators to undertake an undercover operation to capture the suspect; in Tulsa, the investigation into the shooting of a former Marine leads to a dangerous car chase and apprehension.