Silence is probably the best book I have ever read. I simply cannot think of anything else I have encountered that tops it. The story tells of Portuguese priest attempting to preach Christianity in Japan during a terrifying persecution.
Silence asks the question how can God remain silent while his servants are being tortured and killed? This theme runs through the book and by the penultimate chapter you think know how the story will end, an ending which is better than most books can manage. The tale then twists again and what happens at the very end is one of the most profound and disturbing conclusions of any book written on the Christian theme.
In a way the book is similar to Graham Greene's "The Power and the Glory" but Endo puts his characters through much more and as a result the central theme has more resonance. As much as I like "The Power and the Glory" it is inferior to Silence. Silence will make you sweat like a great horror novel and will leave its mark like the greatest literature.
This is possible one of the greatest books ever written with a Christian theme.