Firefighters responding to a house fire are shocked to discover an entire family burned to death inside, and police believe it was a case of murder-suicide.
Solving the double homicide of a homosexual couple and a series of California hate crimes takes investigators into the sordid world of White Supremacy.
Investigators are disturbed to find no forensic evidence at a murder scene, but they feel certain that the victim's canine saw the killer and can provide clues.
Detectives recruit a forensic geologist to help them analyze crucial evidence that may reveal the culprit behind the brutal murder of an aspiring model.
On the side of a remote driveway out in the country, a woman is found murdered and her case goes cold until evidence is found during an unrelated case.
A farmhand tragically dies in a seemingly accidental explosion, but after further investigation of the blast site, authorities uncover the remnants of a bomb.
A promising young college student is found stabbed to death in her apartment and a bloody shoeprint soon points to a surprising killer hidden in plain sight.
The scene of a brutal murder is marred by spray painted threats all over the walls and authorities discover a history of death threats that leads to the killer.
A Texas teen and her boyfriend are savagely attacked on Valentine's Day, causing her death while boyfriend escapes - a case that goes cold for 50 years.
When the body of a young criminology student is discovered wrapped in a blanket along an abandoned road in Brooklyn, the authorities suspect an unusual culprit.
An elderly woman is brutally murdered inside her home during a robbery gone wrong, and the only clue is the fact that she had scheduled a chimney cleaning.
Three men wearing masks attack a wealthy couple outside their home, leaving the husband dead and forcing the wife to give them the code to their hidden safe.
Police are hesitant to believe the story of a 12-year-old girl who claims she was kidnapped and sexually assaulted due to her apparent lack of emotion.
A homicide investigation is impeded by a badly burned crime scene, but forensic scientists are still able to find enough clues to apprehend a trio of killers.
Investigators delve once more into the 1994 kidnap-killing of Shannon Melendi, a Emory University coed; she was never seen alive again after a softball game.
Law enforcement officials turn to forensic scientists to solve a murder case involving a man whose testimony fails to match up with the current evidence.
Law enforcement officials turn to forensic scientists when they are unable to figure out how a stalker could have obtained his victim's home security code.
The last thing anyone except her killer heard her mutter were, "Oh, my God", and Dru Sjodin was never seen alive again; she was taken from a mall parking lot.
In the summer of 1986, Kathleen Lipscomb's body was discovered on an isolated road outside San Antonio; years later, a private investigator found her diary.
The recently widowed wife of an ex-police officer comes under suspicion when a book describing the perfect accidental shooting is found in her possession.
Police receive two different reports of the same murder and uncover strange details about the crime so they must look to seeds and a candy wrapper to solve it.
The wife of a wealthy man makes a killing after he's killed in a car accident with a life insurance claim worth 7 million dollars, giving detectives suspicions.
Police must turn to the expertise of a forensic geologist to study soil samples from a jeep believed to have played a part in a double murder at a boathouse.
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