Scarlet by Stephen R. Lawhead

Scarlet

Will Scarlet is in prison for a crime he did not commit. His sentence is death by hanging—unless he delivers King Raven and his band of cohorts.
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Lorehaven epilogue sponsors

To save their kingdom of doppelgängers, both orphaned Waruu and King Daccias must face their greatest enemy—each other. 

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Sons of Day and Night by Mariposa Aristeo