Books author - "Mo Mo"

One a group of friends where trick or treating.As they were walking getting cand they saw an abandoned haunted house.So then they walked in the house thinking it was only abandoned.Then they saw things moving so they got scared but they said lets not stop keep going.They kept going then they lost one kid they didn't know where he went.So they panicked and looked for him but they didn't find him he found them.They saw hin and got scared because the kid got possessed and started chasing them down