Robin Cook bestseller (4)
I believe the answer is:
coma
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">robin cook bestseller</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for coma that I've seen before include "State of unconsciousness caused by illness" , "Stupor" , "long sleep" , "Unconsciousness from which person cannot be aroused" , "Deep trance" .)