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Goosebumps Wiki


"How to Kill a Monster"is the eighteenth episode of Season 2 of the Goosebumps TV series. The episode aired on Fox during the Fox Kids block on February 1, 1997.


While their parents are away on business in Atlanta, Gretchen and Clark have to stay with their grandparents in Mud Town. Bo-ring! Grandma Rose and Grandpa Eddie are really forgetful—so forgetful that they've gone out for the day and forgotten to warn them that there's a monster locked upstairs!


  • Courtney Hawkrigg as Gretchen
  • Ricky Mabe as Clark
  • Helen Hughes as Grandma Rose
  • Peter Boretski as Grandpa Eddie
  • Tim Rykert as Swamp Monster

Differences from the Book

  • The Swamp Monster has a different appearance. In the book, it is described as a furry creature with an alligator-like head and a gorilla-like body. In the episode, it is depicted as a man-sized humanoid hybrid of a chicken and a dinosaur.
  • Their dog, Charley, does not appear.
  • Gretchen and Clark put the ingredients into a gumbo, while in the book it was a pie. They also grab more ingredients from the cupboards.
  • In the television episode, Gretchen concludes that the monster is allergic to humans when Clark thrusts his arm into the monster's mouth, which causes the monster to explode. In the book, the monster licks Gretchen's arm, and it growls that it's allergic to humans before dying.
    • In the episode, Clark has allergies that were not mentioned in the book, which was done to foreshadow this reveal.
  • In the book, Gretchen and Clark became step-siblings years prior to the events of the story. In the episode, Grechen's Dad and Clark's Mom got married just before the events of the episode and the two must learn to work together throughout the episode.
  • Rose and Eddie only write one letter, and the message about the monster is on the back instead of being the main point of the letter.
  • In the book, the monster invaded Rose and Eddie's home. In the episode, Eddie shot the monster while hunting and brought it home, assuming it was dead.
  • In the episode, Gretchen and Clark are dropped off on their own at the start, while in the book their parents were with them.

Other media

Home media

Title Release date Media type

Monster Blood

September 16, 2008 DVD

3-Pack Thriller

3 Pack; Monster Blood - Night of the Living Dummy - Say Cheese and Die.jpg
August 26, 2014 DVD


  • This is the third of four television episodes on the Monster Blood DVD.
  • The late Helen Hughes lived to be 100-years-old!