Dr. Palmer Jekyll

Dr. Palmer Jekyll is a character in the fourteenth Goosebumps Series 2000 book, Jekyll and Heidi.

Jekyll and Heidi
Dr. Palmer Jekyll is a scientist who lives in a mansion in Vermont with his daughter Marianna. His niece Heidi Davidson, who he and Marianna hadn't seen in seven years, comes to live with them after her parents die in a car accident. When Heidi came to town, she learned from a boy named Aaron Freidus that a monster was attacking the town on a nightly basis. When she tells Palmer, he reacts angrily, trying to claim that it is all a story made up by the townspeople. However, soon Heidi begins to see more and more things that prove that there is a monster. She believes it to be Palmer, especially when he returns home one night, clothes torn and body a mess. But he claims to have injured himself on an evening jog.

Heidi eventually finds a diary that confirms her suspicions that Palmer is hiding the truth about a monster. When she sneaks into Palmer's lab and sees him drinking a green liquid that makes him react in a monstrous fashion, she believes her suspicions to be true and tries to leave. However, Heidi soon runs into the monster, who tries to attack her. Eventually, Heidi is saved by Palmer. The monster then suddenly transforms into Marianna.

They then reveal to Heidi that five years ago, Palmer had car trouble which caused he and Marianna to wind up stuck by a forest. When Marianna went off on her own into the woods, she was bitten by a monster. The result caused Marianna to transform into a monster every night. That's why Uncle Jekyll was testing formulas on himself, to find a cure for her. Suddenly, the townspeople arrive, intent on killing Marianna and Palmer. Marianna and Uncle Jekyll manage to make it out of town, but Heidi returns to the mansion to grab the diary. When she returns to the tunnel, Marianna and Palmer have already run off.