On October 15, 1985, two bomb explosions rocked Salt Lake City and resulted in two deaths. A third explosion occurred the next day. This time, the victim was injured but survived.
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A serial bomber was waging a vendetta against the legal profession. A judge, two attorneys and even a courthouse had been targeted. Employing a range of forensic techniques, investigators used evidence from the bombs to lead them to the perpetrator.
In 1987, a human skull and some bones were discovered at a boy scout camp near Farmington, Missouri. A facial reconstruction aided the investigators in this case.
In the mid-1980s, bodies of nude women were found on a remote hill of California. The police got a break when a known prostitute escaped an attacker and was able to identify him and his automobile.
Eleven-month-old Chad Shelton was admitted to the hospital with unexplained bleeding and later died. Investigators and scientists frantically searched for a cause when others from the same house fell ill.
Heavy rains and snow run-off carried manure into Milwaukee's water supply in 1993, leading to an epidemic of gastrointestinal illness affecting 400,000 people.
After a day of fishing in a small, quiet village in Switzerland, a teenage boy did not return home as planned. The investigation revealed some important microscopic evidence in the water near where he was last seen.
On October 15, 1985, two bomb explosions rocked Salt Lake City and resulted in two deaths. A third explosion occurred the next day. This time, the victim was injured but survived.
For more than a year, hateful letters were sent to a school teacher in Pennsylvania. DNA analysis would eventually help seal the perpetrator's fate.
Two people in Seattle, Washington died after taking an over-the-counter pain reliever. Lab analysis of the pills showed they were tainted with a lethal concentration of cyanide.
Shortly after daybreak in Vancouver, British Columbia, a fire was set in a dumpster. No one saw either the arsonist or the fire, and it burned for hours in the deserted parking lot.
An infant was rushed to the emergency room with serious breathing problems. Within months, there were more than 30 cases. Doctors searched frantically for the cause and a cure.
In a quiet village in Great Britain, a farmer came upon a chilling sight. Impaled on his fence post was a severed lamb's head along with a note which read, "You next."
The flu-like symptoms of a mother and her children proved to be something more serious: thallium poisoning.
While Earl Morris was vacationing in California, he learned his wife Ruby Morris had gone missing from their home in Arizona. The results of the investigation surprised everyone...especially Earl Morris.
A woman disappeared and her husband became the prime suspect especially after police found a huge bloodstain on the carpet of their bedroom. Complex DNA testing proved it was the wife's blood. Now all they had to do was find her body.
A boy is mysteriously shot in his father's gun club. Ballistics, laser technology, scale models and animation reveal the bullet's amazing path and who was responsible.
Series premiere. A flight attendant went missing and was never seen again. Police proved her husband guilty of murder without finding the body.
In 2002, funeral director Lonnie Turner, Sr. was found shot to death. His son Lonnie Jr. became the prime suspect, particularly after it was discovered that the murder was committed with his gun.
In 2004, nursing student Tamika Huston went missing from her Spartanburg, South Carolina home. A tip led detectives to her car and they find an unknown house key that could help solve the case.
A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.
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