This article reports on two authors' work that has been recycled by Routledge without giving credit or royalty. When William E. Deal casually flipped through "Theory for Performance Studies: A Student's Guide," published this year by Routledge, he noticed a few familiar sentences. After taking a closer look, Mr. Deal, a professor of religious studies at Case Western Reserve University, discovered whole paragraphs and even entire pages that had been lifted directly from a book he co-wrote, "Theory for Religious Studies," published by Routledge in 2004. Mr. Deal and his co-author, Timothy K. Beal, a professor of religion at Case Western, estimated that roughly 80 percent of their book had been copied word for word, without credit of any kind. Mr. Deal and Mr. Beal signed an agreement with Routledge in 2005, allowing the company to use the material in their book however it saw fit, provided they were given credit and royalties. The authors never thought the agreement, which they now regret signing, meant that their work could be lifted more or less whole cloth and put under someone else's name. Mr. Deal's discovery has led to a spate of finger-pointing and blame shifting. It also raises a question: How much of a book can you say is your own if it is lifted largely from another source--even with the publisher's permission?