The Unforgivable sin is the strange tale of Senora Louisa Zaboda from Seville. While her husband is on one of his frequent business trips Louisa meets the Prince Michael DeFolay. The once thoroughly good woman is swayed by the grandeur and elegance of the social status of this new royal acquaintance. As ever though with Front Page Drama presentations not all is what it seems with one or more character and you'll have to listen to this one to find out exactly what the sin is and which of these characters will commit it.