The Black Widow Murders

At first, when Stacey Castor's husband unexpectedly passes away, no one thinks anything of it, and his death is ruled a suicide. But when police dig deeper and search the Castor's home, what they find shocks them. And as they delve into Stacey's past with her previous husband, they begin to uncover a sinister web of lies...

Sources:
1) https://en.wikipedia.org/wiki/Stacey_Castor
2) https://abcnews.go.com/US/timeline-black-widow-stacey-castors-shocking-crimes/story?id=60860538
3) https://abcnews.go.com/US/detectives-caught-black-widow-deadly-web-lies/story?id=60854018
4) https://www.oprahdaily.com/entertainment/tv-movies/a30715508/stacey-castor-true-story-facts-poisoned-love-lifetime/
5) https://www.oxygen.com/exhumed/crime-news/black-widow-stacey-castor-convicted-for-murder-after-exhumation
6) https://cnycentral.com/news/local/did-stacey-castor-murder-her-own-father