Donna Tartt's third novel centers on a boy, Theo, whose mother is killed. The tragedy leaves him as the caretaker of a painting known as "The Goldfinch," a work of art which continues to play an important part in his life as he grows up and becomes acquainted with the seedier side of the art world. Tartt is best known as the author of the 1992 bestseller "The Secret History." "I'm so in love with this book," says Sara Nelson, Amazon's editorial director. "It has a sort of epic quality.... [it's] about how this loss and grief shaped [Theo] for the rest of his life, but it's not depressing at all."