The Boxcar Children are excited because their cousins are moving to Greenfield. They decide to fix up the house that cousins Joe and Alice have bought. There's just one problem: it seems to be haunted -- by a ghost that sings! Is someone trying to keep Joe and Alice from moving in?The Boxcar Children are excited because their cousins are moving to Greenfield. They decide to fix up the house that cousins Joe and Alice have bought. There's just one problem: it seems to be haunted -- by a ghost that sings! Is someone trying to keep Joe and Alice from moving in?