Reminds me of the ORIGINAL ending of the movie MANHUNTER.
After the killer “The Tooth Fairy” is dead in the shootout, the “profiler” (Petersen) visits a family, accidentally scares the wife with her child, is interdicted by the husband with a .45, then explains who he is.
He was just checking up on what would have been the next victims of the serial killer, (or was he going to carry on the Tooth Fairy’s work).
This scene was shown in the movie on SHOWTIME about twenty five years ago. It has since been cut.
https://en.wikipedia.org/wiki/Manhunter_(film)
Petersen had difficulty ridding himself of the Will Graham character after principal photography wrapped. While rehearsing for a play in Chicago, he felt the old character “always coming out” instead of his new role.
At first he felt it was due to the rigorous shooting schedule for Manhunter, but later realized that the character “had creeped in”.[7]
...but later realized that the character “had creeped in”....
***
Demon?