From the introduction:
It’s 1880 and Marcelino Sanz de Sautuola just published the results of his most recent discovery. He found and surveyed a significant cave painting discovery in a remote area of Spain.
It’s made him world-famous, and he’s now worshiped among the Community of Archaeologists Valorously Exploring, or C.A.V.E. for short. They even hung a full-sized portrait painted by none other than Claude Monet in the Inner Hallway of Explorers.
As a longtime member of C.A.V.E., you’ve learned that Marcelino is, in fact, a fraud–his daughter discovered the cave paintings and, not only that, but at the Prehistorical Congress in Lisbon, the well-respected French have rejected Marcelino’s findings. "He probably painted them himself."
His full-sized portrait hangs where your head should have been displayed, so in an attempt to capitalize on the excitement of cave paintings, you found a cave and "discovered" a set of your own cave paintings. After cleaning your hands of paint, you present your findings to the Governing Board of the Community of Archaeologists Valorously Exploring, Caves Division. But, before you do, I, Blake Borrow, will show you the tricks of the trade