Diabolical
2018 - 2020| 3 seasons| IMDb 5.4
Diabolical (2018) is currently available in the UK on discovery+ and Discovery+. Last updated 20 January 2026.
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.
Streaming info last checked: 20 Jan 2026