The Last 24

In rural Michigan, 34-year-old Deborah Boothby is run over on the highway, and for nine years the case goes unsolved. That is, until a team of detectives review the evidence and the hit-and-run cold case becomes a murder investigation.

When Diane Holik's body is discovered in her Texas home, detectives are faced with one of the most pristine crime scenes they've ever encountered. They unearth multiple suspects, but only the victim's reconstructed timeline can identify the killer.

In an affluent Atlanta suburb, a young boy is stabbed 18 times when he returns home from school, and his mother's lifeless body is discovered in her bedroom. As police search for the killer, a neighbor's chilling story points them towards a psychopath.

When a woman is murdered in her Alabama home, investigators receive a damning lead pointing to a high-profile suspect. But it will take a decade before their circumstantial murder case has enough grit to go to trial.

A successful vacuum salesman is gunned down outside his Indiana office. As detectives untangle the victims' final 24 hours, all the clues point to a hired hit. But they eventually find the killer much closer to home.

Adouble homicide in NYC soon becomes a media circus when investigators reveal the two victims led a secret life. As the list of suspects grows, it's a call from the victims' home that may provide the only link to the killer.