''The Fountain'' is a highly acclaimed romantic war novel drawing deeply from the author’s own historical experiences as a prisoner of war, the book is widely considered his most successful literary achievement and was awarded the prestigious Hawthornden Prize the year of its release.

The story is noted for its lyrical prose and philosophical depth. Set in the neutral Netherlands during the First World War. Lewis Allison is an interned British officer who is paroled to the castle of a Dutch aristocrat, Baron Von Leyden. While there, Lewis reunites with his childhood sweetheart, Julie. However, she is now married to a German officer named Rupert Von Narwitz. The book explores the complex boundaries between love, duty, and spiritual growth amidst wartime divisions.