The Mystery of the Singing Ghost (The Boxcar Children Series #31)

The Boxcar Children's cousins, Joe and Alice, have bought a very old house on the edge of Greenfield. It's full of dust, creaky furniture, and dead plants. And according to a neighbor, it's haunted by the ghost of Celia Roth. But Henry, Violet, Jessie, and Benny don't believe in ghosts. They spend many afternoons alone in the house, helping to fix it up. Then one day they hear singing from the empty rooms upstairs. Various items begin to mysteriously appear - and disappear. Could there really be a ghost in the old Roth house?