Rita Smith, a renowned domestic violence expert and advocate, tells A&E True Crime about some red flags that indicate an abusive partner may be homicidal.

The 1992 murder of Pennsylvania teacher Christy Mirack was solved after police uploaded the suspect's DNA to a public genealogy database.

Dr. Dennis Dirkmaat explains how forensic anthropology helped crack the Sherry Leighty murder case over a decade after the Pennsylvania woman went missing.

Marie G. Broder, D.A. for Griffin Judicial Circuit in Georgia, talks about the 1983 racially motivated murder of Timothy Coggins, and how 34 years later, she led the prosecution against his killers.

Annita Hetoevehotohke'e Lucchesi of the Sovereign Bodies Institute explains how the group addresses gender and sexual violence against Native people and the challenges it faces.

In 1996 serial killer Ivan Milat received life sentences for the murders of seven missing backpackers found dead in Australia's Belanglo State Forest. Over a decade later, his great-nephew committed a murder and credited it to his family name.

Criminologist Dr. Scott Bonn deconstructs Dennis Rader's 'Factor X', the blamed culprit for why a devout Lutheran and father was driven to commit 10 murders between 1974 to 1991.

Timothy Krajcir, a serial killer responsible for nine murders, stumped investigators for nearly 25 years while killing multiple women in Missouri, Illinois and Pennsylvania.

Forensic anthropologists not only study bones, they also examine human remains and analyze crime scenes to reconstruct past events. We speak with one, Dr. Dennis Dirkmaat, to learn more about the field.

The Salt Lake City mother-to-be was murdered by her husband, Mark Hacking, in 2004 after she discovered he was lying about getting into medical school. We explore the case.