People consider desert part of our moral world. It structures how we think about important areas such as love, punishment, and work. This book argues that no one deserves anything. If this is correct, then claims that people deserve general and specific things are false. At the heart of desert is the notion of moral credit or discredit. People deserve good things (credit) when they are good people or do desirable things. These desirable things might be right, good, or virtuous acts. People deserve bad things (discredit) when they are bad people or do undesirable things. On some theories, people deserve credit in general terms. For instance, they deserve a good life. On other theories, people deserve credit in specific terms. For instance, they deserve specific incomes, jobs, punishments, relationships, or reputations. The author's argument against desert rests on three claims: There is no adequate theory of what desert is. Even if there were an adequate theory of what desert is, nothing grounds (justifies) desert. Even if there were an adequate theory of what desert is and something were to ground it, there is no plausible account of what people deserve. Desert Collapses will be of interest to researchers and advanced students working in ethics and political philosophy.