I don't think it is in even criteria of single star
Suggest not to watch.(not all viewers want to watch sex--I feel makers might forget this)
I feel so much bad and furious after watching it I broke down my phone.
I think makers should make a good end of this movie by knock knock 2 which may include revenge ,a best and dangerous revenge ever by Evan ,
Punish them both so badly so that they beg for death.
(Acting was great)