Missing since May 2019, investigators fear that answers to their pressing mystery—what happened to Jennifer Dulos?—were lost with the death of their chief suspect, her estranged husband, Fotis Dulos.

We explore the serial murders committed by Earl Taylor, Robert Spangler and Jack Reeves: men who killed more than one of their wives.

Family annihilation—wherein men kill their wives and kids (and, more often than not, themselves)—is so grotesque that it feels like it should only happen when a person is blinded by anger. But Chris Watts didn't murder his family in a fit of rage. We explore how his case breaks the family annihilator pattern.

Helen Potts, a young woman of wealth and privilege overdosed on morphine and died in 1890 while attending a prestigious finishing school. Her husband, Carlyle Harris, a med student whom she had married in secret, had prescribed her some pills containing the drug. But the pills contained enough morphine to kill a person—and Harris knew it.

Shortly after Chris Watts was sentenced to three life sentences without the possibility of parole for the murder of his wife and two daughters, prosecutors released a 2,000-page document known as the discovery (i.e. their evidence against Watts). The file contained a massive trove of surveillance photos, FBI interviews, text messages, police interviews with friends and family and more. We examine some of the discovery's details.

Researchers have found the vast majority of people who kill their families (familicide), are men with a history of violence toward their spouse and children. But what tips the scale from abuse to murder? And which men are most likely to kill? We spoke to a professor of forensic psychology for answers.