Della

Della is a female ghost who appeared in the fifty-sixth Goosebumps book, The Curse of Camp Cold Lake.

History
When Sarah Maas arrives at Camp Cold Lake, she is treated poorly by the other female campers. In order to get sympathy from the others, she swims underwater and pretends to drown. When nobody tries to save her, Sarah resurfaces. She finds herself in a spirit world. Sarah hears someone singing Camp Cold Lake's official song. Sarah follows the voice and finds Della. Della greets Sarah by name and asks Sarah to be her "friend"; according to the camp's rules, every camper at Camp Cold Lake is required to have a buddy. Sarah is only able to exit the spirit world when she is resuscitated by a counselor. Eventually, Sarah's bunk-mates apologize for being mean to her. However, Della continues to appear around Camp Cold Lake, but she is seemingly only visible to Sarah.

Sarah is convinced that Della is the ghost of a drowned camper. This theory explains why the camp has implemented such strict rules. Della begins appearing repeatedly. She demands that Sarah to be her friend. Sarah assumes that Della will try to drown her to turn her into a ghost as well. After Della attempt to hit Sarah with a motorboat, Sarah runs away into the woods. While she is trying to find her way through the woods, Sarah is met by Della. Della begins explaining how she actually died to Sarah.

Della reveals that she had tried to scare Sarah away from the lake so she would go into the woods and die the same way she did. A snake begins coiling around Sarah's leg. Brianna, another camper, appears and removes the creature. Brianna explains that Della had tried to kill her during the previous summer, and now she is back to protect other campers from Della. Sarah and Brianna agree to be buddies. Della wails and falls to the ground before disappearing completely. Brianna says that she is unsure if Della is gone forever.

Personality
When Della was alive, she was slightly mischievous, which is made evident when she sneaks out alone at night in order to explore the woods. But after she died, Della is malicious and sinister. She tried to kill campers so that she can have a friend.

Appearance
Della has long curls of white-blonde hair flowing down the sides of her face and pale blue eyes.