Three scenarios and an article on weapons for 1920s Call of Cthulhu. Contains the following adventures: - Tatterdemallion - The Songs of Fantari - The Lurker in the Crypt From the back cover: "Fatal Experiments is a collection of three independent 1920s adventures for the Call of Cthulhu roleplaying game. Two of the three scenarios are suitable for both beginning and experienced players, making this book a perfect companion for first-time buyers of the Call of Cthulhu game system. The remaining adventure is unusually dangerous - to be played only by experienced, foolhardy investigators. The article New & Old Weapons for Call of Cthulhu discusses black-powder weaponry, and details many unusual and custom guns that have been created by enterprising gunsmiths, or that might be commissioned by investigators. Two 2-page fold-outs illustrating many of these antique or unusual firearms are provided."