What compels someone to kill? What hidden truths hide in the shadows of unsolved mysteries?

Join us as we return this October to explore the world's most infamous criminal cases.

This is the evidence locker.

Three men, over 100 lives lost.

Victims left scattered along the highways of California.

As each body was discovered, the horror only grew.

An unidentified woman was found dead in room 2805 of Oslo's most luxurious hotel.

No ID, no passport, and no answers. Was it suicide or a murder stage to look like one?

The house was eerily quiet, the stillness punctuated by the soft hum of fluorescent

lights.

What was left of John Price lay mutilated on the kitchen floor.

His skin hung from a meat hook, and a pot boiled on the stove

with a gruesome stew inside.

Catherine Knight's rage knew no bounds.

Nine experienced hikers fled their tent

into the freezing wilderness, half-dressed, barefoot,

and into certain death.

Their bodies were discovered scattered across the Siberian mountainside,

some with injuries so severe, they were likened to the trauma of a high-speed car crash.

What terrified them so much?

Was it an avalanche, a secret military experiment?

Or something far more sinister.

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