When James Dallas Egbert III was reported missing from his college dorm - one of America's most flamboyant private detectives was summoned to solve the case. "Dallas" had many of the same problems that most teenagers face - but P.I. William Dear stoked fears that he might have fallen under the evil spell of a mysterious and sinister game.... Dungeons & Dragons.

The global panic about the dangers the role-playing game posed to impressionable young minds may seem quaint 40 years on - but again and again we show how fearful we are of creative endeavours we don't quite understand.

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