Leigh Cabot is one of the supporting characters in Christine. She's is the popular and most beautiful girl in school and the love interest of Arnie and Dennis. It is a surprise to everyone when she decides to go out with Arnie.
Leigh is instantly popular and regarded as the most beautiful girl in school. It is a surprise to everyone when she decides to go out with Arnie. While on a date with Arnie, Leigh almost chokes to death on a hamburger. Leigh is certain that Christine was behind it, and when Arnie attempts to save her by hitting her on the back she notices that the dashboard lights on Christine seem to have turned into glaring green eyes. Leigh is saved from death by a hitchhiker, who pulls her from the car and administers the Heimlich Maneuver. Despite Arnie's protestations, Leigh continues to feel as though she is competing with Christine for Arnie's affection.
Soon after Arnie begins parking at the airport, Buddy Repperton, a vicious bully who Arnie and Dennis got expelled earlier in the story, visits Christine with his gang of thugs and severely vandalizes the car. Seeing Christine destroyed completely infuriates Arnie, resulting in the severance of his relationship with Leigh.
Dennis and Leigh become suspicious not of Arnie, but of Christine. They try to find out as much as they can about the car and its previous owner. As their suspicions grow, they try to destroy the supernatural forces that appear to be in control of Christine and Arnie.
The novel ends on an ambiguous note. Arnie's father is found dead in Christine, apparently from exhaust fumes. Arnie and his mother die in an auto accident: witnesses to the accident saw three people in the car before the crash, but only two bodies were found. In the meantime, Dennis and Leigh manage to destroy Christine in Darnell's using a huge, pink-coloured septic tanker truck, named Petunia, and Dennis is informed by a police detective that the remains were fed into the crusher in the back of the garage by two police officers, adding that one received a bad cut that needed stitches, and said "it bit him". Dennis ends the story proper with a salutation to his friend: In the epilogue, set about four years later, Dennis reports that he and Leigh attended college together, consummated their relationship ("very satisfactorily"), but ultimately went their separate ways. Dennis is a teacher in New Jersey, Leigh a housewife in New Mexico. The last page details that, in Los Angeles, Sandy Galton (one of Buddy's gang) has died a mysterious death when a car burst through the wall of the theater where he was working, instantly killing him. The final words of the book convey Dennis' horror as he contemplates the possibility that Christine repaired herself and pursued him, and now may be working her way east, targeting Leigh and LeBay's brother and sister, saving Dennis for last.
Arnie fixes up Christine over time, and the car becomes his obsession. He starts driving it everywhere, and even gets Leigh Cabot to be his girlfriend, much to the dismay of Dennis. Arnie becomes humorless and arrogant, but also assertive and cruel. Christine is destroyed by Buddy Repperton and his gang, who want revenge for Buddy being expelled because Arnie told a teacher that Buddy threatened him with a switchblade. After Christine's destruction, Arnie angrily blames Leigh for it, and fights verbally and even physically with his parents. Finally, Dennis carves Darnell's Tonight into her hood and waits at Darnell's that night inside a bulldozer. Christine chases Leigh around the garage while Dennis tries to hotwire the bulldozer. Arnie is thrown from the car when Christine crashes, with a large glass shard sticking out of his stomach. Arnie dies, and Christine goes after them with a vengeance. He hotwires it and destroys Christine before she can rebuild herself. She is fed into a car crusher, which compacts Christine into a cube. At the end, Dennis and Leigh look over the destroyed wreckage of Christine, as they hear that oldies music playing. However, it is not Christine, only a boombox. Leigh says that she hates rock and roll as a piece of Christine's fender slowly begins to bend, indicating that she is still alive.