THREE KINGS is the twenty-ninth volume in the Wild Cards series, and the second to be set entirely in the British Isles, featuring a cast of English, Irish, and Scottish aces, jokers, and knaves.   It is a follow-up to KNAVES OVER QUEENS, but it is not necessary to have read KNAVES… or any of the preceding Wild Cards books… to enjoy it.   This one is a full mosaic, written by Peadar O Guilin, Peter Newman, Caroline Spector, Melinda M. Snodgrass, and Mary Anne Moharaj, and edited by Melinda, with...