Heidi Davidson

Heidi Davidson is the main protagonist of the fourteenth Goosebumps Series 2000 book, Jekyll and Heidi.

History
Heidi came to visit her Uncle Jekyll, where she becomes friends with a boy named Aaron Freidus, but he claims that her uncle is a monster, and possibly the great great grandson of the original Dr. Jekyll. Heidi thinks Aaron's belief is ridiculous, because Dr. Jekyll and Mr. Hyde is just a fictional story.

When Heidi meets up with her uncle, strange things begin to happen, then she starts to believe Aaron and what all the towns people think about him, she begins to fear her uncle.

In the end, it is revealed that Jekyll was only trying to find a cure for her daughter, who has been turned into a werewolf.