Detectives in major cities in the United States race against the clock in the wake of homicides, knowing that if they don't find a lead within the first 48 hours, their chances of solving a case are cut in half. The programme shows how detectives use forensic evidence and witness interviews to help identify suspects.
In Harm's Way/Jealous Rage: Is a murdered woman's friend telling the truth? (S10 Ep1) Support at channel4.com/support - Real homicide scenes
A father is shot outside an empty house. What was he doing there? Support at channel4.com/support. - Lang may offend/graphic real homicide/may distress
Mixed Up/Blind Alley: Two brothers get caught up in a deadly drug deal. (S10 Ep3) Support at channel4.com/support. - Graphic images/real homicide/may distress/drugs
Division/Loose Ends: Two separate murders are shockingly connected. (S10 Ep4) Support at channel4.com/support. - Graphic images, real homicide scenes, may distress
Schoolyard Revenge: A schoolyard fight leads to a double murder. (S10 Ep5) Support at channel4.com/support. - Graphic images, real homicide scenes, may distress
Girl Fight/Blink of an Eye: A mum is killed in front of her children. (S10 Ep6) Support at channel4.com/support. - V st lang/graphic images&descriptions/may distress
Underworld: Dead ends mar the investigation into a cruel roadside murder. (S10 Ep7) Support at channel4.com/support. - Strong language, graphic images and drug use refs
No Escape/Trail of Evidence: Months pass without a lead in Miami. (S10 Ep8) Support at channel4.com/support. - Strong language and distressing graphic images
Firefighters make a disturbing discovery. And a young dad is shot at a restaurant. Support at channel4.com/support. - Scenes and descriptions of homicide
A man is murdered just before he's due to testify as a witness in an assault case. Support at channel4.com/support. - Scenes and descriptions of homicide
The Good Son/Jacked Up: A teen is killed at his family's taco stand. (S10 Ep11) Support at channel4.com/support. - Strong language and distressing graphic images
Two bodies are found in Miami's Biscayne Bay. Are the cases connected? Support at channel4.com/support. - Scenes and descriptions of homicide
The Slip/The Pure Victim: Two young men are brutally murdered in a basement. Support at channel4.com/support. - Graphic & bloody images/real homicide/may distress
Winter Games: Snow smothers evidence after a father to be is shot dead in a field. Support at channel4.com/support. - Str lang/graphic images/real homicide/may distress
Off the Tracks: A rookie detective hunts a killer when a man's body is found. Support at channel4.com/support. - Graphic images/real homicide scenes/may distress
Twins may have details about their dad's murder. A man's seen fleeing a stabbing. Support at channel4.com/support. - Scenes and descriptions of homicide