Their regular running playlist will be interrupted by messages from their base, a refuge of uninfected humans, giving instructions and encouragement.

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Some of the climbers managed to get themselves back to their base at the Refuge des Cosmiques and raised the alarm.

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What looks like a peaceful, rustic refuge in upstate New York turns out to have been the power base of a small cult, overseen by the charismatic Patrick (John Hawkes), which lured Martha and other errant young souls into its nefarious ways.

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