Elizabeth and Zenobia

After being abandoned by her mother and ignored by her scientist father, Elizabeth found her own companionship: an imaginary friend named Zenobia. But when Elizabeth's father moves them into his childhood home, Witheringe House, her "friendship" with Zenobia becomes strained. Zenobia is convinced they'll find a ghost in the house and forces Elizabeth to conduct seances and investigate the history of the house. And in their investigations, Elizabeth learns a family secret: her father's younger sister disappeared on these grounds years ago. What other things at Witheringe House aren't as they seem?