The Druid's Grove

From the introduction: In this adventure the PCs explore the druid’s grove found in the old stone circle. The stone circle was constructed long before the town was founded and many guess that it was constructed over 1000 years ago. The secret of the grove lays hidden under the stone circle along with an undead wereghast from the time before the Spellplague. A 1 night adventure for 4th-6th level characters