Epistolary? Are you wondering about that word? Let me clarify. An epistolary novel or story is one which is written as a series of documents. Generally, these documents are letters or diary entries, but they could be emails, texts, newspaper articles, or even pictures.
A current popular epistolary novel is The Perks of Being a Wallflower which is a series of letters buy generic bupropion written to an anonymous character.
Can you do this?
Create a series of at least five documents (letters, diary entries, texts, images, photos, collages, etc) in which a friendship becomes terrifying.
You can include letters from one character or two, your choice.