Looking for the King (Inklings, #1)
by David C. Downing (Goodreads Author)

4.5 out of 5 stars
Tom McCord is an American visiting Oxford just before the outbreak of World War II. He is searching for evidence of a real historical King Arthur, and writing a guidebook to all the Arthurian sites in England and Wales. He meets Laura, who has been having mysterious dreams that seem to point to the legend of the Spear of Destiny, which pierced the side of Christ on the cross.
As they search for King Arthur, they also begin looking for clues that the Spear could be hidden somewhere in England. Unfortunately, someone else is looking for the Spear with evil intentions, and mysterious figures harass and spy on Tom and Laura at every turn.
A lecture from Charles Williams convinces Laura that her dreams are true visions of the past. Tom and Laura enlist J.R.R. Tolkien to help them uncover the secrets of the Spear. Tom talks with C.S. Lewis about the spiritual context behind the history, and finds that his search for antiquity is really a journey within his own soul.