The Prisoners of Bell Castle is also known as The Wizard's Castle.
Randal, a journeyman wizard, jeopardizes his powers when he joins Baron Ector's armies in a siege of Bell Castle.
James D. Macdonald (born 1954) is an American author and critic who lives in New Hampshire with his wife and frequent collaborator, Dr. Debra Doyle. He works in several genres, concentrating on fantasy, but also writing science fiction, and mystery and media tie-ins.
Photo: Debra Doyle and Jim MacDonald, fantasy and science fiction authors, at Readercon 2007. Photo source: Wikimedia Commons.