When a woman dies after year of nasty side effects to a drug, investigators had to determine if her death was due to natural causes, suicide, or murder. S8 Ep21
Police are dispatched to a shooting. The victim's husband says his wife accidentally shot herself. He maintains he called 911 immediately, but the evidence seems to indicate otherwise. S8 Ep20
A news producer is raped and murdered. Police turn to the DNA Databank, and a comparison of evidence and profiles results in Virginia's first 'cold hit' in a homicide investigation. S8 Ep19
The double homicide of a gay couple leads investigators into the twisted world of White Supremacists. Shell casings and analysis of glass shards help authorities find the suspect. S8 Ep17
Firefighters find a family dead inside their burned-out home, which at first appears to be murder-suicide. But clues soon lead investigators to believe otherwise. S8 Ep16
Top-notch forensic science helps solve real crimes. Investigators take to the water to determine who was responsible for a terrible attack on two boys out on a fishing trip. S7 Ep3
Investigators turn to satellite surveillance to track down the abductor of a young girl. When they find her, a hidden fingerprint helps solve the case. S6 Ep25
When young Navajos were dying at an alarming rate on a reservation, the tribe's medicine man provided investigators with a critical clue that would lead to an unlikely killer. S4 Ep12
When children in Seattle were fighting for their lives after contracting an unknown illness, investigators needed to isolate the cause and find a cure before time ran out. S4 Ep10
Janice Johnson was found dead in her basement. Police had to unravel the circumstances surrounding her death and answer the question: Was it an accident...or murder? S4 Ep9
Karla Brown was found murdered in her home. With little evidence, it looked like the perfect crime. Then investigators noticed something that had previously been overlooked... S4 Ep8
Doctors couldn't determine the cause of Bobby Curley's hallucinations, treating it as a neurological disorder, Guillen-Barre Syndrome. But something more sinister was happening... S4 Ep6
When a boy is rushed to hospital suffering unexplained brain seizures, his sister provides an important clue that might lead to a startling diagnosis. S3 Ep12
When a serial bomber appears to target people in the legal profession, investigators hope to use evidence from the bombs to lead them to their creator. S3 Ep5
Thousands of people in the same city are struck down with a serious gastrointestinal illness. Health officials suspect influenza, but it proved to be much more sinister. S2 Ep13
After a day of fishing, a teenage boy did not return home as planned. Microscopic evidence in the water might be the only hope of finding out what happened. S2 Ep12
When two bombs explode in Salt Lake City on the same day, killing two people, detectives must rush to find out the link between them, and find the culprit. S2 Ep11
When a teacher begins to receive threatening letters, detectives believe her colleague may be responsible. But evidence will lead them to someone very different... S2 Ep10