The investigation into the disappearance of Helle Crafts led to the murder conviction of her husband.
Old-fashioned police work and computer animation determine how a boy was shot.
Investigators use blood evidence to convict a man of murdering his wife.
Scientists and detectives use DNA to solve a string of rapes and murders.
Police use DNA profiles of seed pods from a truck to catch a killer.
Police thought they had a serial rapist and murderer, but DNA testing and research led to another arrest and conviction.
In 1976, 180 war veterans in Philadelphia were hospitalized with pneumonia-like symptoms and 29 died. The disease resurfaces every few years.
After a physician is murdered, his wife and a handyman are convicted of the crime.
Children from a school outside Phoenix developed acute lymphoblastic leukemia, possibly caused by a benzine leak.
Investigators solved a 1988 murder case by examining the species of fly found near the body.
Scientists investigate high levels of thyroid hormones in South Dakota residents.
In 1971, John List disappeared after murdering his mother, wife and three children. He was found and arrested in 1989.
E. coli bacteria attack a young boy's system.