The Rep doesn't quite seem to have succeeded in conveying the nature of this show, if the sound of a school party being noisily marched out two-thirds of the way through is anything to go by.
American writer Mark Schultz's black comedy, being given its British premiere by ATC and the Drum Theatre, Plymouth, is not a history lesson but the sexually explicit story of a troubled teenage girl.
Charlotte is the 15 year-old ugly-duckling daughter of a beautiful dead mother. She has a tense relationship with her emotionally repressed and uncommunicative father, whose obsession with watching the TV news reflects his refusal to deal with issues closer to home.
Coached by her sophisticated, streetwise friend Heather, Charlotte attempts to build bridges from this precarious base into the wider world.
The title of the play reflects Charlotte's high school dissertation, which she delivers in instalments through the play, making clear her identification with Helen's deserted daughter, Hermione.
It takes a little while to learn how to read the play, since Schultz makes the distinction between real events and Charlotte's fantasies no clearer to us than they are to her.
One of its propositions, which you will not be able to miss, is the apparent role in American teenage culture of fellatio - briefly simulated at one point - as a kind of bargaining chip in trading status.
Though Charlotte's situation naturally prompts sympathy, her self-centredness leads her to do terrible things - lining up a nerdish friend for a homophobic attack and almost implicating her careers counsellor in accusations of abuse.
The play has some wonderful scenes - like the deliriously funny one in which Charlotte, with a 15 year-old's certainty, attempts to persuade her counsellor that she was made for a career in porn. But the whole seems less than the sum of its parts, and the end is as sentimental as it is abrupt.
It is really well done, though. And Andrea Riseborough's beautifully nuanced performance as Charlotte is outstanding.
* Running time: One hour, 30 minutes (no interval). Until Saturday.