The beginning (spoilers)

The couple got out of a taxi The door was unlocked so she opened it.She said something like I'm home. Boyfriend asked where are the embarrassing child photos they walked over to the mantle and they were not there. She said I told you they totally forgot about me. She said that her mom left her phone she picked it up and said it was sticky. They walk and see red hand print then they saw a room set up for a party and a cherry pie that looked was cut already the slice was on a plate the boyfriend said see they wanted to surprise you. He stuck his finger and thought the red on the wall & phone were from the pie. That part was stupid because if I saw red sliding hand prints I sure as hell wouldn't think that was normal. They see streamers and he whispered they wanted to surprise you so act surprised. They both went in and say the dad and mother dead. Then after screaming they turn around and I guess she killed them too because she had the girls overnight tote. Then she was at the house with the family that had the daughter that died she was house sitting and there when they arrived. I hope I helped