The Queen of Cuba, Part 2/2: The Known Unknown | FBI

Meet one of the most notorious double agents in the history of US intelligence - a spy so effective that she was able to operate with impunity for 17 years. Until her arrest in 2001, Ana Belén Montes used her position at the Defence Intelligence Agency to funnel classified documents to Cuba. 

Sophia Di Martino and FBI Special Agent Pete Lapp follow the trail of breadcrumbs that led to her downfall. In Part Two, Pete and his partner use old-fashioned detective work to turn up a killer piece of evidence - and Ana Montes meets her match.

From SPYSCAPE, the home of secrets. A Cup And Nuzzle production. Series producers: Gemma Newby, Joe Foley. Produced by Joe Foley. Music by Nick Ryan.