Shadows of Amber(2005)
(The fourth book in the Roger Zelazny's Dawn of Amber series)
A novel by John Gregory Betancourt
Oberon, newly-crowned King of Amber, finds himself in the middle of deadly political machinations, as his father tries to turn him into a puppet ruler. Meanwhile, rumors abound of a "Shadow Amber" in the sea, where a distorted version of Oberon sits on an onyx throne. To make matters worse, Oberon's sister is trying to marry him off to a grasping would-be queen, at least two siblings are out for his blood, and the entire Shadow-universe is starting to unravel. What's a new king to do? Seek help from an unlikely new ally!
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October 2001 : USA Hardback
September 2005 : USA Hardback
June 2006 : USA Paperback
February 2013 : USA, Canada, UK Kindle edition