An aquamarine gemstone, the Mermaid's Scale, appears in a secret, underground auction. Lupin is coerced by the gem's owner to steal it. He quickly discovers that the stone is a forgery and the real Mermaid's Scale is part of an unsolved riddle that leads to transcending mortality.... (Full plot summary below)
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An aquamarine gemstone, the Mermaid's Scale, appears in a secret, underground auction. Lupin is coerced by the gem's owner to steal it. He quickly discovers that the stone is a forgery and the real Mermaid's Scale is part of an unsolved riddle that leads to transcending mortality.
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