When a renowned professor is found dead, his body melted, it's up to the Investigators of Arkham to discover what occult horrors were behind his fate. Pick your path, Investigator, and collect allies along the way to hunt down his killer before they strike again. However, Arkham is full of mysteries, with many wishing to keep the truth buried, and who are hungry to usher in a new era full of death and darkness to devour the world you know it. Can you stop it before it is too late?