From the back of the adventure:
On a Cold Winter Night...Heroes are asked by a puzzled noble matron to find what plagues her household. Is the winter chill killing her servants, or is there a power behind the fiend of foul weather?
In Cold Blood is an adventure for the Dungeons & Dragons (3.5 Edition) game. It can either be played as a stand-alone adventure, or as part of the LGR - Legacy of the Green Regent™ campaign offered by the RPGA. Designed to challenge 8th-level D&D heroes, the PCs must find a cold blooded killer before he—or she—strikes again.
To use this adventure, a Dungeon Master also needs the Player's Handbook (D&D 3.5e), the Dungeon Master's Guide (D&D 3.5e) and the Monster Manual (D&D 3.5e). This adventure is set in the Forgotten Realms game world, and it may also be useful, but not necessary, to also have a copy of the Forgotten Realms Campaign Setting.