[Possible spoilers?]
Are event cards retroactive? Ex. The first scenario, first event card says something like: "If Clue 3 has not been found all players take 1 horror; otherwise the following action takes place..."
If the players find Clue 3 in the future, does that event play out? I ruled that it would not.
However on another note...
I've noticed that if players are slow in finding clues, they're usually at more of an advantage than to the times where they actually find those clues quickly. Which does more damage: 1 horror, or a flaming zombie running through the house? It seems the more clues they find, the worse off the investigators are, which then encourages the investigators to avoid the clues.
I've only played the first story a few times, but I don't see why the investigators should bother trying to find the clues? Once the 4th event card is flipped and the objective revealed, nothing else really matters. Getting to the 3rd clue was a large feat, and they never managed to make it there, but why does it matter? In the end all they had to do was kill Walter and win. This felt a bit unsatisfying for everyone involved. The investigators were confused as to how the story was supposed to fit together and were questioning their reasons for getting clues in the first place. I didn't really have a rebuttal. In the end it seemed like it didn't matter if the players uncovered 1, 2, 3, or 0 clues, the end objective is always the same. It takes roughly the same amount of game time to get to the third clue as it does to passively reveal the objective.
It's like playing Risk, if 10 turns into the game the rules tell everyone that whoever controls Tunisia wins the game in 2 turns. It seems random for those who didn't see it coming, and feels like an arbitrary and meaningless win.
So, what's the purpose of the clues?