This novel is proof that good horror need not feature buckets of gore or spattering body parts. Judas Tree is all about unease and disquiet, the sense we have sometimes in bad dreams that something is very wrong, although we do not know why. I give top marks to Simon Clark for his excellent location (a rocky, inaccessible Greek island speckled with villas and riddled with secrets), edgy, realistic characters and some subtly nightmarish imagery, which still lingers in my imagination. Judas Tree reads very like a ghost story of the old school, and is all the better for that.