Plot Synopsis

The fifth installment of the HLN's VENGEANCE franchise features stories of revenge, betrayal and murder -- but this time, family dynamics turn deadly. And those who should be trusted the most turn out to be cold-blooded killers. HLN debuted a one-hour sneak peek of VENGEANCE: KILLER FAMILIES on Monday, September 6, 2021 at 9pm ET/PT. Regular episodes include:

"Barrel of Bones" (Sunday, September 12, 2021 at 9pm ET/PT): When police are called to investigate a strong odor at a storage facility, they discover the remains of an elderly woman in a garbage inside a unit rented by a relative.

"Suspicious Baggage" (Sunday, September 19, 2021 at 9pm ET/PT): When a torso is found inside of a suitcase floating in a local canal, a woman's family members fear the worst.

"A Will to Kill" (Sunday, September 26, 2021 at 9pm ET/PT): When a prominent entrepreneurial mom is found brutally stabbed to death in her home, police investigate motive. Did her wealth make her a target?

"Evil In-Laws" (Sunday, October 3, 2021 at 9pm ET/PT): When a young mom is murdered steps from her child in a superstore parking lot, investigators discover she has a family connection to the killer.

"Sinister Sibling" (Sunday, October 10, 2021 at 9pm ET/PT): When investigators enter a home to perform a wellness check, they discover the murdered remains of a mom and her daughter. They also find suspects...still in the house.

"Little White Lies" (Sunday, October 17, 2021 at 9pm ET/PT): When a brutal home invasion leaves a mom dead, police investigate. Can the two surviving members of the family shed light on the possible motivation for murder?

"The Bad Son" (Sunday, October 24, 2021 at 9pm ET/PT): When a retired couple is bludgeoned to death in an affluent suburb, a web of lies lead investigators to the greedy killer.

"Parental Guidance" (Sunday, October 31, 2021 at 9pm ET/PT): When a loving mom is stabbed to death, investigators working the case discover family secrets. But could they hold the key to her murder?

"Deadly Inheritance" (Sunday, November 7, 2021 at 9pm ET/PT): When a wealthy retiree and his new wife meet a violent end in their home, surveillance footage leads investigators to the cold blooded killer.

"Gang Ties & Family Lies" (Sunday, November 14, 2021 at 9pm ET/PT): A Christmastime horror for one Arizona family as its patriarch is stabbed to death at home. Who would want to hurt a hardworking dad?