September 5, 1998. A friendly in the U.S. Postal Inspection Service intercepts a package that leaks strange chemicals. A package that rustles, as if something inside is moving.The moment the inspector opens the package, it becomes a Delta Green op.Now your Agents must pursue horrors and vicious foes from Berkeley to rural Montana, and confront a hideous threat thought long dead. Dead Letter is a complete scenario for Delta Green, the role-playing game of Lovecraftian horror and conspiracy. Requires the Delta Green core rules or the Need to Know quickstart rules.