I want my sister back(Book 1 & 2 COMPLETED)

*[BOOK 1 COMPLETED & BOOK 2 COMPLETED] What happened to her? She used to be so innocent so adorable now she has turned into something else,playing truth or dare I ended up being dared to stay in a haunted house for which my sister wishes to kill me. Will I survive or end up like the person before me...(Make sure to comment and vote)

Third Book coming soon- it'll be from Bostons POV if you have not read the other two then you would not know what I meant.