These are children’s and young adult books that take place on Christmas.
Mystery
Greenglass House by Kate Milford, 2014.
A boy investigates the strange people who have unexpectedly come for Christmas at the smuggler’s inn his parents run in a mysterious old mansion and the thefts that occur there.
Peril at Owl Park (2020)
Aggie and her friend Hector go to spend Christmas with Aggie’s married sister at the manor house where she now lives with her husband. One of their other guests is carrying a cursed emerald, which is stolen, and the children discover one of the actors hired for the Christmas party’s entertainment dead in the library. Part of the Aggie Morton, Mystery Queen series.
Fantasy
Ophelia and the Marvelous Boy by Karen Foxlee, 2014.
Ophelia meets an enchanted boy imprisoned in a strange museum and must help him to defeat the evil Snow Queen.
Winterhouse by Ben Guterson, 2018.
Elizabeth is sent to a mysterious hotel for Christmas, where she learns the secrets of the the family who owns the hotel and her own past.
Jestress's Children's Shelf 