Nancy Grace

Gerald "Bob" Hand always seemed to have an alibi when one of his wives — Donna, then Lori, then Jill — turned up dead.

John Bridges first killed when he was 16. A psychologist would later call him “the most psychopathic and dangerous person” she ever evaluated.

After their whirlwind romance turned into a toxic marriage, Jesse Crow is said to have killed Ryann Bunnell Crow. The motive: Protecting his marijuana operation.

Seven months after Private First Class Vanessa Guillén was bludgeoned, dismembered, and burned, questions remain about the case. Her family wants answers.

Private First Class Vanessa Guillén’s body was burned and dismembered after she was murdered.

After murdering her husband in Minnesota, Lois Riess fled to Florida, where she befriended her next victim: a woman named Pamela Hutchinson who looked just like her.

Daron Wint butchered and burned Savvas Savopoulos, his wife, their son, and their housekeeper. Nancy Grace shows how a fatal lapse in judgment played a part in the tragedy.

Chase Massner was dealing with marital issues and mental health struggles when he went missing after spending the night with a friend.

While the case's main suspect, Aaron Robinson, died by suicide in July just as authorities were closing in on him, his girlfriend, Cecily Aguilar, now faces charges related to the case.

Before watching the "Injustice with Nancy Grace" episode on Jennifer Dulos, here are some facts so you can familiarize yourself with the notorious case.