Who killed Pepper?
**Spoilers**
So, in the case of two dead sisters, it shows the husband approaching Pepper with a pillow, like he's about to suffocate and kill her.
But then his wife says to Pepper's father, that he poisoned the flask (it wasn't just alcohol).
So, who really killed Pepper? The guy who looked like he was going to smother her with a pillow, or her father by poisoning her with what was in the flask?
Thanks.