Did I miss something...
SPOILERS BELOW
Who the heck was the ex-con?? Were we suppose to know who he was or his significance?
I also thought it was so obvious that the dude had poisoned his wife cause how would someone else know where she kept her water glass?
I also knew her mum must have some disease purely from the way she struggled with the spoon, although I didn't get the homo goblin thing until the end.
Overall disappointing and not enough mystery.