

Eight months after Oskar initially met Abby, he finds a message from her on the answering machine. Black again later but finds out he has moved house, presumably to be with Ruth, and is selling his apartment, leaving behind a card for Oskar, reading "Oskar Schell: Son". Black ends his travels with Oskar, who struggles with his departure. After meeting with a woman named Ruth in the Empire State Building, who has a history of her own with the building, Mr. Black, and they develop a close friendship. The book spans many months of Oskar's journey, some of which he is accompanied by his eccentric elderly neighbour, Mr.

The reader learns towards the end of the book that "the renter" is actually Oskar's grandfather, who abandoned his grandmother while she was pregnant with Thomas, though Oskar does not realise the connection. Toward the end of his journey Oskar meets an old man he calls "the renter" because until the point of meeting, Oskar had only heard of the old man's existence from his grandmother who referred to him as the new tenant in her apartment. Oskar and Abby instantly become friends, but she has no information on the key. One of the first people Oskar meets is a 48-year-old woman named Abby Black. Curious, Oskar sets out on a mission to contact every person in New York City with the last name of Black in the hope of finding the lock that belongs to the key his father left behind, creating a binder with mementos of his journey. One day, in his father's closet, Oskar finds a key in a small envelope inside a vase that he accidentally broke in the keyshop he finds the name Black and thinks this has something to do with the key. His relationship with his mother has also become strained, particularly as she has started dating a man named Ron, whom Oskar resents for having replaced his father. He often describes the feeling of depression as wearing heavy boots, and deals with this by giving himself bruises. Since his father's death, Oskar struggles with insomnia, panic attacks, and depression. The novel begins after the tragedy, with Oskar narrating. Oskar Schell is a nine-year-old boy whose father, Thomas Schell, died in the terrorist attacks on the World Trade Center on September 11, 2001.

The discovery inspires Oskar to search all around New York for information about the key and closure following his father's death. In the story, Oskar discovers a key in a vase that belonged to his father, a year after he is killed in the September 11 attacks. The book's narrator is a nine-year-old boy named Oskar Schell. Extremely Loud & Incredibly Close is a 2005 novel by Jonathan Safran Foer.
