Dateline

The investigation into the death of a pregnant woman reveals secret lives and feuds.

A well-known woman from a prominent family is found dead in her home, located in a resort town.

Over the course of a year, violent crimes are committed against two women from the same church.

Campus cops make a terrible discovery in a dorm room after a boyfriend's weekend visit goes horribly wrong.

Authorities work to establish why a loving mother was brutally stabbed to death in her home.

Cops suspect a murder-for-hire plot when a realtor is attacked and left for dead at a home showing.

Investigators seek answers when a prosecutor and a district attorney and his wife are murdered.

The 2006 poisoning death of former Russian spy and businessman Alexander Litvinenko.

After shedding hundreds of pounds, a popular kindergarten teacher goes missing.

A love triangle is uncovered after a doctor ingests a lethal chemical.

A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

A foreign exchange student and soccer player's participation in a dangerous game leads to deadly consequences.

A determined investigator works with a prosecutor in hope of solving a 20-year-old murder case.

Robert Durst's recent arrest in New Orleans and his whereabouts over the past 30 years.

A woman kills the man she suspects of being involved in an attack on her husband and young son.

After losing a hotly contested custody battle, a woman disappears with her 11-month-old daughter.

A man from Iowa is shot to death while sleeping in bed next to his fiancée.