Simplify the following text for a Grade 9 native English-speaking person.
Original: Book Eleven chronicles Ivan Karamazov 's destructive influence on those around him and his descent into madness . It is in this book that Ivan meets three times with Smerdyakov , the final meeting culminating in Smerdyakov 's dramatic confession that he had faked the fit , murdered Fyodor Karamazov , and stolen the money , which he presents to Ivan .
Simplified: Ivan has been visiting Smerdyakov , who keeps on saying he knows that Ivan secretly wanted Fyodor Pavlovich Karamazov to die .