Investigation Discovery continues its heritage of providing in-depth, compelling documentaries & series that challenge viewers to think about key issues that shape our culture and define our world.

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A 29-year-old mother doesn't return home from a meeting on a December evening, then she is found frozen solid in the snow.

Ice Cold Killers

Permanent Frost

After a single mother vanishes in Wisconsin, police learn she was recently stalked by two men at a bar.

A Winter's Grave

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True crimes set in harsh climates against rugged and unforgiving backdrops.

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A police officer is gunned down while on a midnight patrol, and her attacker flees with her squad car and weapon.

S4 E1 | Frozen in Fear

E7 | Permanent Frost

E4 | A Winter's Grave