My sister read and enjoyed this book when she was younger. From the jacket: "How can she escape a ghost who follows her wherever she goes? When her family first moved into the empty old house, Cinnamon sensed something wasn't quite right. Then she found a packet of old love letters, and the eerie sensation grews tronger. They were letters from Felix to Emily--beautiful, romantic letters filled with the forbidden yearnings of the love they shared long ago. Now Felix's ghost wants Cinnamon's help in finding his long-lost Emily. He follows her everywhere, pleading, begging, insisting that she help him. Can she resist his strange power? Or will Cinnamon become the next victim of the mysterious ghost with the haunting dark eyes?"