The investigators find themselves becoming secret agents over night and entangled in a conspiracy that spans the whole world. The various dangers they encounter along the way include:
- Agents of the Outside
- Agents of Yuggoth
- Cleanup Crew
- Crimson Conspiracy
- Dark Veiling
- Mysteries Abound
- Outsiders
- Scarlet Sorcery
- Secret War
- Shadow of a Doubt
- Spatial Anomaly
- Spreading Corruption
- Strange Happenings
These are particularly memorable stops on their travels:
- Riddles and Rain
- Dancing Mad
- Dead Heat
- Dealings in the Dark
- Dogs of War
- On Thin Ice
- Sanguine Shadows
- Shades of Suffering
- Without a Trace
- Congress of the Keys
Related articles:
Spoiler-free Campaign Review
Setup Checklist:
The Scarlet Keys Setup Checklist
“Best-Laid Plans” Campaign Deep Dive:
BLP: The Scarlet Keys
BLP: The Keys themselves
BLP: The Vote
BLP: Traveling
Player card discussion:
Scarlet Keys Visual Spoiler
Investigator Expansion Review
Customizables Discussion: #1, #2, #3, #4