The Night Gardener by Jonathan Auxier 370 pages

Molly and Kip have traveled from Ireland to work at the Windsor house, despite warnings from a local storyteller and many along the way. While working for the Windsors, Molly and Kip befriend Penny, the youngest Windsor. The longer Molly and Kip stay, they more danger they are in. Strange things happen at night and someone keeps leaving muddy footprints throughout the house. 

When Molly and Kip learn the true of the night gardener, they decide to leave the Windsor house. However, that is not as easy as they thought it would be. Can they save the Windsors as well as themselves?

This is a preliminary nominee for the Mark Twain Award. There is a bit of violence at the end and if you get scared easily, this might not be the book for you.