Oh, and there is enough deception and deliberate author-induced misdirection to make Arthur Conan Doyle smile.
The basic premise - having a stranger whisper something to you that makes you begin to doubt, well, everything - makes this book impossible to put down.
And as the story unfolds, the main protagonist finds himself swept up in a search for his wife - and the truth about both his relationship to her and his own culpability in his (and other people's) troubles.
The Stranger is highly recommended, though it's no beach novel.
And it's on the new book shelf at the Watkins Glen library.