Killer Grannies
Oxygen True Crime Running Crime
A true-crime series that chronicles the most shocking and unpredictable cases involving a killer no one would suspect: Grandma. In every self-contained episode, a rollercoaster ride of a case unfolds as investigators dig deep and chase every lead until they finally catch their unexpected killer. Through gripping archival footage, selective recreations and cinematic imagery, and in-depth interviews with investigators, prosecutors, friends and family, every episode will peel back the plastic cover on the couch to uncover a world of sinister plots and evil deeds unpacking why and how these maternal matriarchs of the family can turn deadly.
Where to Watch:
Oxygen True Crime
Next Air Time: No upcoming air date
Seasons & Episodes
Season 1
8 episodes
E01
Granny's Fatal Fantasy
Mon, Nov 10 2025 1:00 AM GMT+0000
60 min
A beloved chef and cooking instructor is found shot to death at work, and investigators are left baffled. But when a loved one's strange behavior draws their attention, detectives discover the killer has been right in front of their eyes.
E02
Granny's Garden
Mon, Nov 17 2025 1:00 AM GMT+0000
60 min
An ailing man isn't seen for weeks, and his family and friends grow concerned. When his wife is confronted about her changing stories, her revelation shocks the community...and everyone who knows and loves her as a dedicated grandmother.
E03
Granny's Addiction
Mon, Nov 24 2025 1:00 AM GMT+0000
60 min
A Florida woman is shot in her vacation rental, and the hunt for her killer connects back to a murdered Minnesota farmer. Clues point to a doting grandmother living a double life, who then leads authorities on a multi-state chase.
E04
Granny's Under the Bridge
Mon, Dec 1 2025 1:00 AM GMT+0000
60 min
An Oregon grandmother found wounded on the roadside tells rescuers that her husband is missing after a boat sale went awry. A massive manhunt ensues but as authorities investigate, granny's wild story unravels to reveal a darker truth.
E05
Granny's Boarding House
Mon, Dec 8 2025 1:00 AM GMT+0000
60 min
A Granny is thought of as a 'Mother Teresa' to the downtrodden thanks to the boarding house she runs. But when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.
E06
Granny's Word v Granny's Word
Mon, Dec 15 2025 1:00 AM GMT+0000
60 min
An Army vet is found dead on his farm. It first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling "she said, she said" murder mystery.
E07
Granny's Killer Gravy
Mon, Dec 22 2025 1:00 AM GMT+0000
60 min
A veteran cop falls for a beloved grandma he hopes to spend the rest of his life with, but when a home cooked meal sends them both racing to the hospital - this granny's gravy, and her sordid past, are brought under scrutiny.
E08
Granny's Wishing Well
Mon, Dec 29 2025 1:00 AM GMT+0000
60 min
A respected Fire Department Captain disappears during a fishing trip, but an exhaustive search turns up nothing. Almost two years later, a tip reveals a sinister tale of manipulation and a granny whose wishing well hides buried secrets.