Extremely Loud and Incredibly Close is a novel by Jonathan Safran Foer, published in 2005. The book tells the story of Oskar Schell, a precocious and sensitive nine-year-old boy, who lost his father in the 9/11 attacks on the World Trade Center. In the aftermath of his father's death, Oskar embarks on a quest to uncover the meaning behind a mysterious key that he finds in his father's belongings. His search takes him on a journey through the city, where he meets a range of eccentric and unforgettable characters, each with their own stories to tell. Through Oskar's journey, the book explores themes of loss, trauma, and the importance of connection and empathy in the face of tragedy. Extremely Loud and Incredibly Close is a poignant and emotionally resonant novel that captures the complexity and nuance of grief and healing.