Not dulling like it was supposed to . Was akin to the split second when someone pops out from behind a door and scares the hell out of you by accident , except with the door scenario your terror goes - down - because you recognize what startled you . It did n't go down . In fact , I suspect it went up a bit more as there was - no - light to go by .

Question: What may be the reason for their fright ?
Answer: They were n't expecting someone to pop out .They were being followed by someone in the dark .None of the above choices .They were walking alone in the dark .