I just ordered this and did a quick skim of the scenario. I didn't think of this and so I will let others know. Per the scenario, the way to get the most out of it is to have the horror rules and horror deck. It also recommends that you have Horror Booster 2. I don't have the horror deck. If I had been aware of that, I would have bought the horror deck instead of the solo deck when I placed my order. So just an FYI for others since the scenario description doesn't make mention of specifically using the Horror Deck.