The mystery behind the Aguinas family and their potion stockpile deepens following the mission to rescue Dr. Nierenberg's daughter from Robert's blackmail attempt. But his escape complicates matters, drawing Mariela that much closer to the royal family and the prying eyes she'd so desperately worked to avoid. With potions running low and a seemingly endless labyrinth still before them- how much longer can Mariela keep her alchemical abilities secret...?

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