The clue is...
a piece of evidence or information used in the detection of a crime or solving of a mystery.
a verbal formula giving an indication as to what is to be inserted in a particular space in a crossword or other puzzle.
inform someone about a particular matter.
So, I made 'The clue' page is the link(or ling each other) of something matter(actor, genre, director, BGM and author and so on) at viewing in ViKi.com
Could you find the clue?