Shakespeare's Scottish play (7)
I believe the answer is:
macbeth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shakespeare's scottish play</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 macbeth that I've seen before include "its name must not be mentioned" , "piece" , "Shakespeare play" , "Thane of 6" , "bloody drama" .)