Terror on Cemetery Hill by Drew Stevenson, 1996.
Halloween is coming, and spooky things are happening around Wilsonburg. Randall Davis, a new boy in town, comes to the diner looking for Sarah because he’s heard that she likes to investigate mysteries. Randall’s mother has recently become the caretaker of the cemetery, and Randall enjoys astronomy, so he decided one night to take his telescope up on top of Cemetery Hill. While he was there, he saw what looked like a hideous monster. Randall asks Sarah to have a look around the cemetery and help him figure out what he saw.
After some persuading, Sarah convinces Clark and Frog to come with her. Not only do they see the creature in the cemetery, but they find Mrs. Biddle, head of the town’s group of psychic investigators, unconscious in the Wilson family mausoleum. The Wilsons are the family that the town was named after. Mrs. Biddle and her group have been told before not to hold any ceremonies or investigations in the cemetery because they disturb people. She insists that she was investigating the creature in the cemetery and that it pushed her and knocked her out. Something strange is going on in the cemetery, but is it a creature come back from the dead, or maybe something to do with the recent bank robbery in town?
Everyone believes that the bank robbery was just one in a series of robberies staged across the country by a robber known as the Village Bandit because he tends to rob banks in small towns. However, Sarah has a different theory.
This is part of the Sarah Capshaw Mysteries series.