Please give me a short summary of "The Catcher in the Rye."

Caulfield narrates the story of his expulsion from Pencey Prep and experiences wandering New
York City on his own before he checking into a mental sanatorium in California. Holden Caulfield
is depicted as a neurotic, hypocritical teenager, who is extremely cynical and fears entering
the competitive world of adults. Holden Caulfield also has a traumatic past and has not fully
recovered or accepted the death of his younger brother , who died of leukemia. As an unreliable
narrator, Holden is not in touch with reality and tells the audience blatant lies throughout the
story. After Holden leaves Pencey Prep at the beginning of the novel, he wanders around New York
City completely alone. He frequents hotels, bars, and even walks around Central Park. Holden
desperately seeks a companion and someone to talk to but continually approaches strangers and
refrains from interacting with the people who genuinely care about him. Holden ends up sneaking
home to see his sister,...