Knock Knock (2015)

A talented architect named Evan is a happy husband and caring father. One day a man stays alone for a weekend while his wife and children decide to spend a couple of days on the warm coast. The main character's plans to spend a few days in a calm atmosphere were disrupted by the unexpected appearance of two pretty girls. Strangers, who introduced themselves as Bel and Genesis, ask the owner of the house to let them inside to take shelter from a heavy downpour.

After some time, Evan, unable to resist the charms of the girls, finds himself in bed with beauties who, waking up the next morning, refused to leave, and began to behave in a strange way. While the good-natured owner of the dwelling was thinking about how to save his own marriage, the young ladies attacked him, tied him with ropes and began to torture him. Trapped family man has to urgently find a way to pull himself out of a deadly situation, because crazy ladies are not going to leave an unnecessary witness alive…