With her dying breath Mary of Guise entrusts a silver casket containing explosive secret papers to the young Scottish heiress Rinette Leslie. She makes Rinette promise to keep the casket hidden & only to give it to Mary Queen of Scots now on her way home from France to ascend the throne. But Rinette makes a terrible mistake
- she cannot resist showing it to her beloved young husband before consigning the casket to its hiding place. This fatal decision will lead them into a maze of conspiracy & murder in which they
- & the beautiful castle by the sea which is Rinette's inheritance
- become the targets of ruthless men who seek to possess the casket at all costs. Unable to tell friend from foe at court & desperate to protect the queen's secrets Rinette has one powerful weapon which may save her
- the ancient art of floramancy through which she can interpret the language of flowers & sometimes predict the future. But if the flowers should stay silent who can she trust then?