In this episode of Monstrous, we meet Nannie Doss — The Giggling Granny — the sweet, grandmotherly figure who baked cookies, giggled through interrogations, and poisoned everyone who got in the way of her idea of “true love.”

She looked like everyone’s favorite grandmother: wire‑rimmed glasses, floral dresses, and a plate of freshly baked cookies.

However, behind the kitchen door, she was one of America’s most prolific suspected arsenic killers, with eleven confirmed deaths stretching across multiple states and decades.

We trace Nannie’s life from a strict, repressive upbringing in rural Alabama to her lonely‑hearts hunting of husbands, the suspicious “illnesses” and house fires, and the one stomach that finally looked odd enough to call for an autopsy. Then, the tables turned: Detective Harvey Tyree sat her down, laid out the p ...