does Jeff die in the end?
Spoiler alert
It seems like the rope is too long and we hear a sound of him falling to the ground. The cops were on their way and the ex was already there. Wouldn't denying him the suicide and letting him b captured with all the evidence fall in line with other things Hayley did (like the fake surgery)
Or he hung himself and effectively escaped.
It wasn't shown to be 100% sure unfortunately