Frequent "Twilight Zone" theme (8)

I believe the answer is:

paranoia

(Other definitions for paranoia that I've seen before include "Psychological disorder" , "Mental disorder characterised by delusions of persecution" , "Mental disorder - intense suspicion" , "Disorder characterised by delusions of persecution or grandeur" , "Unjustified suspicion and mistrust of others" .)

I've seen this clue in the Newsday.

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