I think he is dead and in purgatory because he's had tried to present himself as an innocent victim.
But am now thinking they are implying the second wife in fact visited the 3 witches to get her wish, the death of the first wife (or it was just an accident which he covered up?) and / or she then asked for him to be got rid off because he was not turning out to be the dream husband.
Why else did the 3 witches turn up in her hospital room. He had tried to pay they to reverse her wish and so she nearly died, but because she came back he had to die??
Just rambing as realised I am not sure I care!
I always watch thing like this for the stage sets, costumes etc.. And finding out that didn't think any part of London looked like the square - but someone on here mentioned it was Bristol.
And thought the village couldn't be Sussex, more like the Cotswold.
So the real story is a man sort of predicted who might want a relative dead and then lured them into thinking witches could make it come true, but in reality he was just a serial killer?