Mariana Trench by Neil Shusterman... The novel's protagonist, Caden Bush, is a bright high school student whose friends noticed strange behavior. In his dreams, Bush was on a ship heading to the deepest point in the Earth's interior, the Challenger Deep, or the Marianas Trench. He was appointed as the ship's painter to document the journey. Through his drawings. Bush pretends to join the school marching team, but he spends his days walking, completely absorbed in the thoughts in his head. On the voyage, Bosch conflicts between his loyalty to the ship's captain and the allure of rebellion, as Shusterman depicts the pain, horrors, and faint touches of hope that come with mental illness. A captivating novel about the mental illness of a high school teenager, with excitement continuing until the last page. The Mariana Trench is a heartfelt novel by New York Times bestselling author Neal Shusterman