Yuji Yonemori published a book titled Abduction in 2007. In this book, he argues mainly in support of C. S. Peirce's theory of abductive reasoning. Peirce said that abductive reasoning is the process of forming an explanatory hypothesis, that the reasoning is the only logical operation which introduces any new idea, and that the reasoning differs from either deduction or induction. Yonemori agrees with Peirce on all of these points in his book. In this review, I shall critically comment on the book.