Peter Straub’s body of fiction is noteworthy for, among other strengths, its combination of coherence and development from work to work. Previously, I have looked at this coherence and maturation in terms of the structure of his novels, his handling of metafiction, genre creation and reframing, and themes such as personal and socio-political guilt. Here, I’ll continue this exploration by examining the specific tropes of the bad place—a location where evil things are done or have been done that continues to resonate with horror—and the secret place, of which the bad place is often an example. These tropes have continued to develop in Straub’s fiction, in ways corresponding very roughly to the time and genre of each work so far. Specifically, I’ll examine the appearance of the bad place as an underground site, primarily in the Blue Rose books and how this transforms into two different places in Straub’s more recent fiction.