A woman's naturalized US citizen Fiancee was visiting family in the UK to collect his inheritance from the death of his father (precious metals and currency). Returning home with his inheritance in his luggage, he is detained at Madrid Airport when attempting to check-in for a connecting flight to the US. He is locked-up in Airport Detention and accused of smuggling and trafficking undeclared goods of value, in violation of import/exports customs regulations of the UK/EU/Spain.