Ivan visits Smerdyakov multiple times, trying to piece together the truth behind the murder and his own complicity. Eventually, Smerdyakov confesses that he killed Fyodor Pavlovich and claims that Ivan shares responsibility. Ivan, shaken by this revelation, realizes that his philosophy of a godless world where "everything is permitted" is crumbling. Overwhelmed, he begins to hallucinate an encounter with the Devil, marking his descent into madness. Meanwhile, Dmitri’s trial begins, with multiple witnesses testifying about his personality and actions. The prosecution portrays Dmitri as a violent and greedy man with a clear motive to kill his father, while the defense argues that he is impulsive but not a murderer. The trial intensifies as both sides engage in a heated battle over Dmitri’s fate.