The shooting of successful paediatric dentist Kendra Hatcher in the gated parking garage of her Dallas condo spurs detectives to unravel a twisted plot as they chase a fugitive who ends up on the FBI's most-wanted list.

Holistic doctor Teresa Sievers looks forward to a television career on the horizon until someone bludgeons her to death in her Florida home; a random tip from an out-of-state police chief ultimately brings investigators face-to-face with the killer.

The key to solving the toughest murders lies somewhere in the final 24 hours of a victim's life. Determined investigators must piece together events to reconstruct the timeline, unlock the motive, and ultimately close in on the killer.

In Connecticut, a motorway clean-up crew discovers a suitcase containing the crumpled remains of 24-year-old Valerie Reyes; as the list of potential suspects grows, solving the case may hinge on a portrait of the killer sketched by the victim.

A coworker finds Dr. Joseph Sonnier's body face down in the garage of his Texas home. Before long, the list of possible suspects includes the victim's girlfriend, a mysterious stalker, and a long list of jilted ex-lovers.

With two mortal gunshot wounds and tape residue on his wrists and ankles, it's clear 21-year-old Landy Martinez suffered before his death; detectives hope the victim's cell phone provides the critical evidence they need to close in on his killer.