The mystic in my group played Sixth Sense in that scenario and discovered a clue on an adjacent location while being at the Polar Mirage. Do they trigger Polar Mirage or not? Does the "at the attached location" refer to the clue obtained, or the location of the investigator?
In the same campaign we have Kindred Mist using the wording "while you are at the attached location", but we also have Snow Graves using the wording "clue from this location" Neither of them uses the wording "at". So which is it?