i ran this in Cthulhu Dark and it was a great fit with that systems focus on poor, vulnerable people taking on otherworldy threats in an already harsh world. Offers the chance to pull out some cod mafia accents as well as you play Chicago in the 1930s, always a plus to use some decently silly voices and names. Great investigative structure that ultimately leads to dark places, and clues that build a macabre atmosphere throughout play. Again, non standard mythos and all the better for it.