In second story when police comes to search the house, phone is shown unplugged and not working, but it rings just a few minutes later, working fine.
Rod drops a different bottle than the one he went to sleep with when he wakes up from his nightmare.
Valdemar's socks are alright when he is taken down to basement, but when Jessica looks if Valdemar and Robert are gone so she can open the door to nurse, his socks are obviously torn.
Annabel can be seen moving her eyes while dead in the bathtub.
When Valdemar is put into fridge, his mouth can be seen moving.