Disorder. Chaos. But a chaos with its own logic. The protagonist of this noir novella is Juan Barcelona, who shares his surname with his native city. A PhD in Physics, he discovers through mental illness and an obsession with Sigmund Freud that murder is not only a social disorder but an irreversible process. Killing belongs to thermodynamics. And entropy shall be the last stop in an analytical trip to the city of Barcelona. 'Disorder' is the translation of 'El desorden', an acclaimed work of contemporary urban fiction from Barcelona native Juan Carlos Girauta.