[Bozos of Bones]

The gost that is silent(Kyosti's spirit) is not in Fell wood. When you kill the Will-O-Wisps, talk to the guy at the beginning of the woods and he'll tell you stuff. When you ask him about a silent spirit, he'll say there is no solent spirit in the woods, but that he saw a specter lingering next to a big block of stone infront of the woods(Limha's area). Go there, talk to him, you convince him that he can talk and then report to Kruttu.