The story follows , a girl who believes she is inhabited by a disconcerting being she calls "La Cosa" (The Thing) . This "guest" is a silent parasite that dictates her behavior and gradually takes over her life, manifesting in increasingly devastating ways as she matures into adulthood.

The novel was a finalist for the prestigious Premio Herralde de Novela in 2005.

You can find the version through major retailers and digital libraries: Official publisher page at Editorial Anagrama.

It is celebrated for its precise, surgical prose and its ability to blend the everyday with the uncanny. Digital Availability