This stunning debut novel about grief and wonder was an instant New York Times bestseller. After her best friend dies in a drowning accident, Suzy is convinced that the true cause of the tragedy must have been a rare jellyfish sting—things don't just happen for no reason.

Retreating into a silent world of imagination, she crafts a plan to prove her theory—even if it means traveling the globe, alone. Suzy's achingly heartfelt journey explores life, death, the astonishing wonder of the universe...and the potential for love and hope right next door.