Seven Call of Cthulhu scenarios designed to be used as transitional scenarios.

Contents:
The Auction (McCall)
The Madman (Harmon)
Black Devil Mountain (Hargrave)
The Asylum (McCall)
The Mauretania (Willner)
Gate from the Past (Clegg)
Westchester House (Wolcott)

From the back of the book:

In every Call of Cthulhu campaign certain situations arise regularly. This book takes seven of those situations and turns them into horrifying adventures. Each story is meant to be used freely by the Keeper (the gamemaster) when he or she needs a quick plot for an impromptu game or as fillers in larger campaigns. Investigators' Information, Keeper's Background, and suggestions for use are provided for each episode. The center four, gray-edged, pages are to be carefully pulled out and handed to the players appropriately as per the scenario.