Buy this.
The content in skullduggery works everywhere. You aren’t stuck to Waterdeep or Neverwinter. It is designed to plop into any city and be relevant and engaging, and the player options work well in any city. The first D in D&D speaks to stone corridors, monsters, and traps in a Dungeon. Skullduggery helps you turn any city into a dungeon. You should buy it.