Reddit reviews The Athenian Murders

Great answers so far! I should add another couple of suggestions myself: The Athenian Murders, by Jose Carlos Somoza, which is about Platonic ideas and the notion of translation; Sum, by David Eagleman, which is a set of vignettes about possible afterlives; works by Irish Murdoch (e.g. The Bell and The Black Prince); and works by Rebecca Goldstein (e.g. The Mind-Body Problem).

A great read The Athenian Murders By José Carlos Somoza "The Cave of Ideas", this book's title in the original Spanish, is actually a far better one; certainly more apt.

In a highly original and literary approach to crime fiction, Spanish writer Somoza's gripping English-language debut interweaves text from an ancient Greek manuscript with an account of the growing anxieties of its modern translator. In the Greek text, Heracles Pontor, "Decipherer of Enigmas," is called upon to solve the grisly killings of young men at Plato's Academy of Philosophy. Athenian tutor Diagoras, a sort of Watson to Pontor's Holmes, comes to ask the sage's help after the corpse of a handsome "ephebe" (adolescent) is discovered.
Open Library