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Medusa: A Tiger by the Tail is the fourth book in the Four Lords of the Diamond series by author Jack L. Chalker. First published as a paperback in 1983. It concludes the saga started in Lilith: A Snake in the Grass, Cerberus: A Wolf in the Fold and Charon: A Dragon at the Gate.
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Midnight at the Well of Souls is the first book in the Well of Souls series by American author Jack L. Chalker, first published as a paperback in 1977. Over a million copies of the original pressing were sold, and reprints have continued for decades. It came in #18 in the 1978 Locus Poll Award for best science fiction.
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