Hitchcock classic (6)
I believe the answer is:
psycho
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hitchcock classic</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for psycho that I've seen before include "nuts" , "Well-known Hitchcock film" , "Method of treatment pioneered by Freud" , "Chopsy (anag.)" , "Bates Motel horror film" .)