Juliet: The first letter writer. She feels deeply sorry for something she did in the past and is trying to make amends. In her late-thirties.
Max: Juliet’s former acquaintance (love? Friend? Something else?) In his forties.
Maggie: Juliet’s best friend, same age. She feels that Juliet has punished herself enough for what happened.
Alexis: Max’s aunt. She feels deep resentment towards Juliet, and is fiercely loyal to Max.
John: Juliet’s cousin. In his twenties. He’s the one who finds the body.