How the Grail came to the Fisher King

A modern-day author conjures Sir Percival of the Round Table to a New York cancer hospital to bring the Grail — the real one — to a friend in need of healing. Sir Lancelot, never willing to be upstaged, intrudes on Percival’s quest. The two knights know all the versions of their stories that have ever been told, but the story they’re in now has surprises in store for them and their bossy author.