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.
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
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
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
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
Leads run dry after a retired police captain is murdered at a Miami marina. Support at channel4.com/support. - Scenes and descriptions of homicide
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
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
Can witnesses ID a masked café killer? Shots ring out on a sunny Miami street. Support at channel4.com/support. - Scenes and descriptions of homicide
False leads hamper a rookie detective. A simple request ends in murder. Support information at channel4.com/support. - Scenes and descriptions of suicide
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
Two die in a drive-by shooting. Fear silences a murdered teen's friends. Support information at channel4.com/support. - Strong language & scenes/descriptions of homicide
Matching tatoos appear in different cases. Is a self-defence claim true? Support information at channel4.com/support. - Scenes and descriptions of homicide
A bystander's killed during a shootout. Calls to 911 could crack a case. Support information at channel4.com/support. - Strong language and homicide scenes/descriptions