How was your experience?
Someone is channeling Anthony Perkins. I do not know the novel but this play had feel of the film Psycho at least in the male character. It is hard to grade it except that it held attention for 2 hrs though that was the attention one has when we know something bad is going to happen. Highly manipulative, certainly not uplifting, just a little short of Grand Guignol. Welcome to a nightmare.