This adventure with finding the secret papyrus all began with a call from Geronimo Stilton’s grand father. He was talking about the Black Papyrus and how he didn’t talk about it in the newspaper he wrote. Soon Geronimo Stilton was surprised how the Black Papyrus had gotten so famous and even with that he still had no clue what it was. Since Geronimo Stilton was desperate to figure out what the Black Papyrus was, he went to a museum where the Black Papyrus is kept, and where his friend that is a professor,and he knows all about the Black Papyrus. When Geronimo Stilton finally got into the museum because of the long line, he met the professor, and learned all about the Black Papyrus! Soon Geronimo Stilton discovered that the Black Papyrus was gone, and they are trying to catch the thief, but the mouse is nowhere to be found. He also discovered that his friend is in horrible danger because his friend is the only one who knows how to read the papyrus, and soon the theif will mousenap him! HOW WILL GERONIMO STILTON CATCH THE THIEF, AND PROTECT HIS FRIEND?! READ THE BOOK TO FIND OUT!!!