u/Dear-Investigator681

Book where a schoolboy is made to volunteer with the elderly by his school and is assigned to an old woman who lives in the woods, he visits once a week and each time she tells him a horror story. One story involved two sisters and one listening in on the others call using their landline and then the sister goes missing and they see something out the window wearing her skin. Ends with the boy having to roll dice to decide his fate.

Horror/thriller genre, supernatural theme

Read around 2017 when i was 11 but wouldn’t say it was age appropriate, read it in school but don’t think it was provided by the school