Thyestes, to which this monograph is devoted, exhibits all the characteristics of the Senecan plays that facilitate the centuries-long interest in them on the part of scholars and lovers of literature. They are also responsible for the distinctiveness of the author’s work against the background of Greek tragedy — due to the philosophical-critical nature of the work, they disengage from a directly didactic tone in favor of provocation and irony, the potential to engage less with the emotions and more with the intellect of the audience. It is possible to also find here examples of Seneca’s characteristic semantic and formal solutions, which confirm the dynamic development of the genre in Antiquity and at the same time may seem fairly modern today.