Extremely Loud and Incredibly Close by Jonathan Safran Foer

A nine-year-old boy named Oskar Schell embarks on a quest to solve the mystery behind a key he discovered in his deceased father's closet. His father died in the 9/11 attacks, and Oskar believes the key is a clue to a message his father left behind. As he explores all five boroughs of New York City, he encounters a diverse group of people, each with their own stories and struggles. The narrative is a poignant exploration of grief, loss, and the search for closure.

The 5593rd greatest book of all time