Charlie moved into an apartment in the city, he builds a new maze for Algernon, and he met Fay Lillman, who is his neighbour, she is an artist. Fay was shocked by the neatness of Charlie's apartment.
Charlie met his father at his barbershop, but his father didn't recognize his son, and treated him as a customer. Charlie got a haircut.
Fay bought Algernon a female mouse named Annie, and Algernon perform well in Charlie's new maze, but sometimes feel angry or depressed.
Charlie eats dinner with Alice after the movie date, a mentally handicapped boy served him, the boy accidentally broke some dishes, people were laughing at the boy, Charlie got angry and screamed to the crowd that the boy is a human and deserves respect.
harlie visited the Warren Home, the staff were good, but it had a poor condition, Charlie saw the people there and thought about he will become live that soon.
Charlie wrote his finding to Nemur, he explained that he discovered a phenomenon called "Algernon-Gorden effect", the more artificially intelligence once gains, the quicker it will decrease. Charlie tried to reassure Nemur, Strauss and Alice, that they shouldn't feel guilty because they didn't know that.