The Infatuations by Javier Marías.
A seemingly random murder sets Javier Marias's novel in motion. The story brings attraction and uncertainty into contact with a death whose meaning cannot be separated from the people interpreting it.
Read it for the influence desire exerts on judgment. The novel offers a discussion of whether learning more about another person makes understanding clearer or simply gives the imagination more material.
Edition note: The cover shown is the Vintage paperback (ISBN 9780307950734). The Apple Books option is the English ebook (ISBN 9780307960733), translated by Margaret Jull Costa.
