On the evening of November 28th 1953, in New York, Frank Olson was found on the pavement outside the Statler Hotel having fallen out of a window on the 13th floor. 

Olson died shortly after hitting the pavement.

His death was first said to be caused by suicide. But then Olson, had worked for the CIA and on MK Ultra. Nothing was quite what it seemed...

This episode was written by Emma Dibdin and produced by Richard MacLean Smith

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