Crime writer Ellison Oswalt moves his family into a house where a horrific crime took place earlier, but his family doesn't know. He begins researching the crime in hopes of writing a book about it.

Karen, an emergency room doctor, is rescued by a handsome stranger named Daniel after she is attacked on her way home one night. When Daniel is injured in the attack, Karen takes him back to her ...

Avengers Grimm received a direct sequel in 2018 through Avengers Grimm: Time Wars while also having gotten a loose spin-off through Sinister Squad in 2016.