Possession
First-grader Ellie accesses forbidden parts of Internet, and accidentally summons something scary to her home.
Story codes: M/g, nc
more detailed story codes behind the link
Part 1
Chapter 1 - Into the unknown
Chapter 2 - New sensations
Chapter 3 - Worrying signs
Chapter 4 - Demon pays a visit
Chapter 5 - Looking for help
Part 2
Chapter 6 - Sacraments
Chapter 7 - Kindness of strangers
Chapter 8 - The priest and the demon