One Knight Only — Peter David

In Knight Life, King Arthur was elected mayor of New York City. Now, in One Knight Only, Arthur has a new job -- President of the United States...

President Arthur Penn and his wife, Gwen, have been learning to navigate the intricacies of Congress and international politics. It's a challenging job, even for a once and future king...especially without the guidance of his trusted advisor Merlin. The once mighty sorcerer has been frozen into a statue by an immortal enemy -- a statue that adorns the White House's Rose Garden so that Arthur can keep the mage by his side, at least figuratively.

Nevertheless, the president's popularity is soaring -- and then tragedy strikes. First Lady Gwen falls victim to an assassin's bullet from one of Arthur's mortal enemies, and lies in a coma. Her only hope rests in the lost Holy Grail -- and grail hunting, as Arthur remembers, is a very dangerous occupation...