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Designer Anna Brinkman has always favoured reason over feeling, but everything changes when she arrives at an old castle. Having decided to marry a wealthy heir, she falls in love with the mysterious butler Clarence, not her chosen one. But Anna's problems do not end there: she has to investigate the brutal murders that took place in a castle cut off from the world. All of this is somehow connected to the long-dead Empress Theophano, a seductress and poisoner whose story Anna learns. And when all the secrets are eventually revealed, it turns out that these events were deliberately orchestrated by someone.