Season 01
Season 03
Season 04
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All Episodes - S03
EPS01
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EPS02
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EPS03
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EPS04
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EPS05
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.
EPS06
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EPS07
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EPS08
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EPS09
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EPS10
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