Got sucked in...and, yeah, Mr. Bana plays a real scary guy!!
But for the other performances (mum and daughters) I can only say: lame (mum) or annoying (daughters). In fact I've seen much better performances by the actress who plays the younger daughter. If the older daughter would talk in real life the way she does in this series, I would do a runner. The ending sucks!
The mum way too impeccable for the trauma unfolding...