Commins' Case: Bloody Burlesque

My name is Claude Commins. I am a detective. However, I do not investigate cheating wives or corrupt politicians; I investigate things that go bump in the night.
When a beautiful brunette strolls into my office and says someone is trying to kill her, I sense danger. Unfortunately, I need the money.
Serial killers, the mob, and even dark magic. Will I be able to solve this mystery and collect my fee?