There are books of the same chemical composition as dynamite. The only difference is that a piece of dynamite explodes once, whereas a book explodes a thousand times. ― Yevgeny Zamyatin
It's an unusual play. Film noirish, if I can put it like that. As the story unravelled I got emotionally involved, and I waited with bated breath for the ending.
The story gave me the creeps.
Don't get confused with negative reviews. Either read the play first or, if you buy the audio, listen till the end. 'An inspector calls' is an emotional roller coaster which starts on a rather low key but gets mysterious and macabre by the end.