Back where witch lived — she heartless (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

ENDOR (=where witch lived; the Witch of Endor is to be found in the OT in 1 Samuel, and is consulted by Saul for advice following the death of the prophet Samuel) + S <h> E (“heartless” means middle letter is dropped)