Series synopsis
Killer Grannies is an American documentary crime television series that premiered on Oxygen on November 9, 2025. It stars June Squibb and Terry Quillen.
Killer Grannies is a true-crime documentary series on Oxygen True Crime that profiles shocking real-life cases where grandmothers turn into cold-blooded killers. Hosted by June Squibb, each self-contained episode follows investigators as they unravel the sinister plots and dark deeds of a seemingly innocent, maternal matriarch of a family.
Premise
Killer Grannies is a true-crime documentary series on Oxygen True Crime that profiles shocking real-life cases where grandmothers turn into cold-blooded killers. Hosted by June Squibb, each self-contained episode follows investigators as they unravel the sinister plots and dark deeds of a seemingly innocent, maternal matriarch of a family.
Premise: A killer no one would suspect: Grandma.
Cast and characters
Leading cast
- June Squibb as Host
- Terry Quillen as Martin Griesbauer
Guest cast
- Terry Quillen as Martin Griesbauer
Episodes
This series spans 1 season with 8 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 8 | November 9, 2025 | December 28, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Granny's Fatal Fantasy 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. |
November 9, 2025 |
| 2 |
Granny's Garden 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. |
November 16, 2025 |
| 3 |
Granny's Addiction 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. |
November 23, 2025 |
Production
Release
| Original network/platform | Oxygen |
|---|---|
| First aired | November 9, 2025 |
| Last aired | December 28, 2025 |
| Status | continue |