As it turns out, even authors not living in this online age are in trouble. My fellow literary sleuth Alex MacBride recently revealed to me that he'd uncovered an old crime in a new way. MacBride, a linguist employed by Google, idly ran a phrase from England Howlett's 1899 essay Sacrificial Foundations through Google Book Search, his employer's massive digitization of millions of volumes from university libraries. The search had nothing to do with his job—like the rest of us, sometimes Alex just kills time by plugging stuff into Google—and rather than go to the trouble of digging out Howlett's book by name, he'd decided to call it up with a phrase. To his surprise, he got more back than just Howlett: The search also revealed a suspiciously similar passage in Sabine Baring-Gould's 1892 book Strange Survivals. A lot of suspiciously similar passages.

Perhaps it's not too shocking that a small-time amateur like Howlett swiped from Baring-Gould, a frenetically prolific folklore scholar who published hundreds of books and articles. But, the search results revealed, this was not quite the end of the story. "Charmingly," MacBride e-mails, "Baring-Gould seems to have had sticky fingers himself." The wronged author, you see, had in turn used the unattributed quotation from a still earlier work: Benjamin Thorpe's 1851 study Northern Mythology.