Elizabeth Meriwether is one of television's most interesting storytellers. The original "Black Widow" centered on a serial killer marrying wealthy men and killing them for their fortunes, but "Furious" only keeps the skeleton of that premise. Here, the killer is Catherine (Lola Petticrew), a survivor of human trafficking who changes identities to infiltrate the lives of wealthy, predatory men before killing them. She's not motivated by greed, but by revenge — hunting the rich, powerful men connected to the sex trafficking ring that victimized her as a teenager. It is both among the best crime shows in TV history, and a messy, complex examination of the psychological toll when an all-consuming revenge plot turns into calculated vengeance.