Newlywed Lisa Techel, 23, was pregnant and asleep in bed in her Iowa home, when she was shot to death by her husband, Seth, in May 2012.

A romance author writes about how to murder a husband—and then kills her spouse. It might sound like the plot of a novel, but it happened in Oregon in 2018.

Detective John Dawes speaks with us about the difference between solving active and cold cases.

Psychological autopsies, performed by forensic psychologists, are used to try to resolve cases where a murder may be mistaken for a suicide.

After Diane Staudte's husband and son died, and her daughter was hospitalized, an investigation showed she, and her favorite daughter, Rachel, were responsible for their deaths.

The reign of the bodybuilding world's most famous couple, Sally and Ray McNeil, ended after Sally murdered Ray with a shotgun in 1995.

From German nurse Niels Högel to U.K. doctor Harold Shipman to American nurse Charles Cullen, some serial killers target their patients.

Amish men are rarely prosecuted and jailed for sexual abuse against children. What's being done to expose these crimes?

We speak with Deborah Marion, mother of murdered NBA star Lorenzen Wright and Darren Goods, a lead investigator in Wright's homicide case.

The murder of a Chinese woman by her American husband in Columbia, Missouri was a long and painful case for police investigators, attorneys and, most of all, her parents.