Just when you think you've heard it all here, someone tells you about Mary McCarthy.

At 107 years old, the Canadian born McCarthy would seem like an unlikely person to be trapped by Washington's strategy to topple Fidel Castro. But with millions frozen in a Boston account, she is.

Her late husband, Spanish businessman Pedro Gomez, owned a leather factory in Havana and made combat boots for the Cuban army. That is until Fidel Castro seized power, ran his customers out of town and nationalized his operation.

VIDEO: Havana's penniless heiress explains her predicament

After Gomez died, his widow inherited all of his money, but it's been essentially untouchable – sitting in a Boston bank.

Back in the 1960s the U.S. government froze all Cuban assets – including McCarthy's inheritance after the heiress refused to abandon her Havana home.

"The people here are very, very nice," says McCarthy. "Very charming and very generous and will help you at any time and at any hour." With that in mind, she's refused to leave. 

See the video link above to hear McCarthy's full story.