It’s a bit of a spoiler, telling you this, but if you’re looking for some suspense with kind of a creepy atmosphere, but don’t want to read about “real” ghosts, you might check out some of these. Many of them are kind of like Scooby-Doo style mysteries, and others are about the power of imagination.
Siblings who are making a car trip home without their parents become trapped by a storm at an old house full of sinister people and a possible ghost. By Vic Crume.
Laura and Bill are visiting their Uncle Joe, who is the caretaker of a large hotel in New Hampshire. The hotel is closed for the winter, but the children investigate the ghost who supposedly haunts it and may have their uncle under her spell. By Janet Adele Bloss.
A spooky little series of stories about different children and the monster stories they invent and tell each other. It’s fun to be scared! By Rose Impey.
About a girl in elementary school who solves mysteries with the help of her friends, who call themselves The Martians. Not all of the books in the series are spooky mysteries, but a few are. By Susan Pearson.
About a pair of sisters who live in Indiana and have adventures on road trips with their father. Not all of the books in the series are spooky mysteries, but a couple are. Written by Eth Clifford.
J. Huntley English is a boy genius who also happens to believe in monsters and wants to find real ones. With his friends, he investigates strange phenomena and odd people in their small town in Pennsylvania. By Drew Stevenson.
The adopted son of a famous judge helps him to solve mysteries in feudal Japan. Not a series for young children! By Dorothy and Thomas Hoobler.
About a girl who wants to be a detective and her two friends. They investigate spooky mysteries in a small town in Pennsylvania. By Drew Stevenson.
A group of third graders investigates strange phenomena and possible ghosts, including one at their school. By Grace Maccarone.