Medium's meeting (6)
I believe the answer is:
seance
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">medium's meeting</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for seance that I've seen before include "Medium's meeting" , "Spiritualist meeting presided over by medium" , "Meeting for communicating with spirits" , "Spiritualist meeting to contact the dead" , "Encase (anag)" .)