This question already has an answer here:
There is a problem with questions that contain spoilers in the title appearing in the Hot Network Questions. Unfortunately there are technical reasons why they can't be blocked using he ignore tag system.
What can we do about this? How about editing titles to remove spoilers, e.g. there is a question about wildfire in the latest episode of Game of Thrones, which could be fixed by replacing the word wildfire with "this thing"?