Cold SNAP | CIA

High in the Himalayan mountains, a team of climbers are attempting to plant a device that will give them eyes on a growing threat. But they'll leave behind more than they bargained for.

In this shocking episode, Investigative reporter Jeffrey Gettleman is your guide to a tale of high altitude and higher stakes in the 1960s - and one that still resounds in the present.

From SPYSCAPE, the home of secrets. A Cup And Nuzzle production. Series producer: Joe Foley. Produced by Joe Foley.

Presented with thanks to the Jeffrey Gettleman and the New York Times for their original reporting.