From publisher blurb: The PCs learn that the Trypus unearthed secrets from within the Sink that have allowed them to build a colossal-sized, monstrous construct death-machine. To counter them, the PCs must find and open a series of mysterious locks that allow them to access the fabled Panopticon. Locks of the Panopticon is an adventure for Season II of the Great City: The Sinking adventure serial. It was designed using the Pathfinder RPG system and intended for a group of 10h-level Player Characters.