Three connected Call of Cthulhu scenario in the 1920s:

- Into the Throat of the Beast
- The Wanderer
- And the Dogs Shall Know You

Investigators travel to a mining town in Pennsylvania to discover why miners are being scared off, to Arizona to look into a strange radioactive asteroid and to the science department at Miskatonic University.

The book comes with a time-line and calendar for the Keeper to keep track of events which happen on specific days during the scenario - whether or not the players know it!