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Diabolical
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.
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Cast & Crew See All
Season 3 Episode Guide See All
Episode 1
Daddy's Little Nightmare
Tue, Mar 10, 2020
"Daddy's Little Nightmare" In 2017, Federal Heights, CO., is feared when 69 yr old Bill Mussack is missing and gone without a trace. Police act fast to uncover a killer with a heinous plot before the evil-minded murderer strikes again.