On a stormy day, Georgie asks his older brother (Bill Denbrough) to make him a paper boat. Bill agrees, and makes the S.S Georgie. As Georgie was about to go out for the boat's maiden voyage, Bill uncharacteristically told Georgie to not go far and to be careful. Georgie assured Bill that he would be.
Georgie, initially enjoying himself, let the boat sail down the street in the rain. Eventually it slips into the sewer, upsetting Georgie. Seemingly out of nowhere, Pennywise pops up in the sewer, trying to chat with Georgie. At first, Georgie hesitates in talking to the clown, and refuses his boat when offered (as his father had told him not to take things from strangers). The clown introduces himself as "Pennywise The Dancing Clown", claiming that they were no longer strangers. Feeling like Pennywise had him on the ropes, a smiling Georgie was about to turn and leave, and told Pennywise that he had to go. Before he could, Pennywise stopped him by showing him his boat, which made Georgie become overjoyed to see it again. Pennywise beckoned Georgie to take his boat, with promises of cotton candy, rides, and balloons of all colors. When Georgie asked if they float, Pennywise responded to the affirmative. However, when Georgie reached down to take his boat, Pennywise told him that when he was in the sewers with him, he would float, too. Suddenly, Pennywise took the boat away from Georgie, grabbed him by the arm, and made him scream in terror. It transformed into Georgie's worst nightmare, ripped his left arm off, and left him to bleed horribly to death. Georgie was only heard by a nearby man named Dave Gardener and actually seen by the same man to witness him dead by the sewer.
In the 2017 film, Georgie was still alive after had Pennywise bitten his arm off and was crawling away when he was pulled by him into the sewers so that he could finish him off, and ate alive with him screaming Bill's name as he was being dragged. Additionally rather than being Dave Gardener, the sole witness of Georgie's fate (including before getting attacked) is an unnamed woman and her pet cat, the former apparently horrified by these events.
George's death was the first in the fall of 1957 and it was what drove Bill to defeat It. Although in 1958, It threatened to appear to Bill as George, It never did so until 1985 (excluding Its appearance before Richie and Bill in Georgie's room; when It sprung from the canal in a photo wearing Georgie's face), in the sewers. When Bill saw It as George, he worked through his grief and overcame Its ruse. In the film, It did take on the appearance of George in both timeframes, with the 1958 scene being when the Loser's Club formed a circle, and George was the form that was chosen to try to break Bill's hold. In 1985, It was more subtle and appeared at a quieter point when the Losers tried to find It's lair. After finding and following Georgie's boat, George appeared, blamed Bill for sending him outside, and caused his boat to go down the drain. Bill was aghast until Beverly firmly said that was not George.
- Georgie was described as innocent and curious. He loved to play, especially with Bill. Bill loved George dearly and always treated him passionately and with respect.
- Georgie's death was referenced in Stephen King's 2011 novel, 11/22/63, when Jake Epping visited Derry and a bartender in a hotel told him about some recent child murders that took place, which was rumored to be committed by a man who dressed as a clown. The bartender told Jake that Georgie's body was found in the sewer drain.
- In the 1990 TV Miniseries, Pennywise grabbed Georgie's right arm instead of his left, the same happens in the 2017 Film.
- Also in the 2017 Film, Georgie's death is changed. As well as having his right arm bitten off, Georgie is also dragged into the sewers and devoured by Pennywise.