Hereditary's Toni Collette portrays Grace Rasmussen, a character based on real-life Detective Edna Henderson. The detective, like Rasmussen, was the more experienced officer in the case, having worked over 100 sexual assault cases. She received a message from Denver's Detective Stacy Galbraith, who noticed similarities between her case and one of Hendershot's. The suspect in both cases wore a mask and used a camera to take pictures of the women he assaulted.