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Currently you are able to watch "Diabolical" streaming on fuboTV, Max, Max Amazon Channel, Discovery+ Amazon Channel, Discovery+, Investigation Discovery or for free with ads on Tubi TV. It is also possible to buy "Diabolical" as download on Apple TV, Vudu, Amazon Video, Google Play Movies.
Calculating. Cunning. Cold as ice. In Diabolical, a new gripping ten-episode series on Investigation Discovery, these shockingly devious masterminds use their wits and wiles to manipulate us, seduce us and try to get away with murder.