The gruesome stories of ancient Greek culture are not about ancient Greece per se: they apply to the human condition in general. I do not know about their accuracy (at the least they seem somewhat well researched) and are retellings of the original myths in a more contemporary way: Stephen Fry: Mythos-The Greek Myths Retold There is the variant of one myth, for example, which is often referred to as “ancient Greek” even though it is Roman in origin: the origin story of Medusa.