From the authors website: You and your companions are recognized as local experts in things strange and unusual, which is why Detective Harden has asked you and your team to consult on the murder of Arkham socialite, Eugene Saltonstall. For the crime scene defies all reasonable explanation, and is more aptly described as something strange and unusual. Drained of blood and torn to pieces, the murder of Eugene Saltonstall is something the Arkham Police Department is not trained to understand and unprepared to handle. Hopefully you’re up for the task!