This is book number 3 in the Haunting Danielle series.
When a local heiress goes missing, Danielle discovers it's not always possible to distinguish the living from the dead. To complicate matters, it seems Danielle is not the only one who communicates with spirits. Her new guest claims to hear Walt. But, something's not quite right with Marlow House's newest medium. Danielle must move quickly before her best friend joins the spirit world. (Large Print)