The investigation concerns a 1982 suit brought by Texas novelist Benjamin Capps and his publishers against the author and publisher of an historical novel, Sacajawea, alleging that the book contained approximately 145 instances of copyright infringement. Parallel-column exhibits of passages from the novel by Anna Lee Waldo and from Capps's writings illustrate the evidence submitted in court. The publishing history of the novel, brought out by Avon Books, is related, as well as the story of readers' discoveries of suspicious material and the ultimate litigation. A comparison is made of the original novel and a revised edition published in 1984. Using the Sacajawea case as a reference point, the study considers the state of ethics in the contemporary literary world.