Seneca the Younger was a fascinating character and this movie is an interesting exploration of that character. I think that historians will be displeased with the liberties that this story takes with truth and historical accuracy, and I suspect that much of the general audience will be lost because of the lack of historical context that this movie provides. I am a fan of Seneca and I enjoyed this, but it definitely isn't a tentpole film.
There is an audience for this film though, and I wish that it had been better promoted in the U. S. and that it had seen a wider release, because John Malkovich, Lilith Stangenberg, Tom Xander, Geraldine Chaplin, and Andrew Koji and several others have delivered excellent performances here. Frankly, John deserves an Oscar for his performance, and, while John, Lilith, Geraldine, and Andrew are all seasoned actors, Tom Xander in particular deserves special credit for taking on and nailing such a complex role.
The cinematography is beautiful, the directing is great, the writing is tight, and the acting is on-point, but the subject is somewhat obscure, and so it is probably never going to be a top-ten film. Perhaps some day Seneca will get the Oppenheimer treatment, but until then, this may be the apogee of Roman history in 21st Century cinema.