Throughout Lighting Out for the Territory: Reflections on Mark Twain and American Culture, Shelley Fisher Fishkin articulately presents her discoveries about Twain's life and works and the type of role they play in modern times. Written with a first-person narrator and an aim to describe her experiences, Fishkin's research is evident in her travels, making it possible for her to explore Twain's life and the racial perceptions and criticisms that accompany his work. Refreshing in nature, her trip allows readers to grasp her investigative nature and find satisfaction in her discoveries.

Determined to express and test her views, Fishkin believes that Twain has shaped our view of America, visiting Hannibal to research his career as a writer. She realizes that Missouri exhibits a great attachment to Twain, and that items based on fictional characters exist throughout Hannibal, in particular the fence that Tom "persuaded his gang" to whitewash, which bears a commemorative sign. Her major discovery in Hannibal was the realization that residents are reluctant to come to terms with black history, and rather than facing the realities of racism, they find individuals throughout the town who exhibit characteristics of Twain's characters. They call Joe Douglas, who died in 1923, "Injun Joe," although he was neither dishonorable nor murderous, and in the last decade, Mt. Olivet Cemetery placed an "Injun Joe" headstone on Douglas' grave to attract visitors to Hannibal, greatly disturbing Fishkin. Rather than simply recording her findings, her commitment to her research is obvious, as well as her view that the awareness of black history is essential for racial understanding.

In some respects, Fishkin's discoveries support her long-held beliefs, linking Twain's search for truths with her own. In Elmira, New York, in 1995, Fishkin discovers a book in which Clemens underlined "it is the deep commandment…of our whole being to be free." She questions how Clemens, raised in a slaveholding town, and with a father who sent "slave-stealers" to jail, could write Huckleberry Finn, and discusses the oral tradition of slaves, stating that Clemens learned from their story-telling ability, mentioning Uncle Dan'l and Jerry's impressive rhetorical performance. In 1868, Clemens asked the Langdons for permission to marry Olivia, and Mr. Langdon's antislavery activism helped Clemens raise questions about the matter. Although slavery disappeared, racism was legal, and lynching and brutality resulted in Twain's "Only a Nigger" and "Disgraceful Persecution of a Boy." Readers expected humor from Twain, but instead accepted his stories with emotion and respect.

Throughout Lighting, Fishkin indicates that much of her life is dedicated to Twain, and she fervently defends his work. In 1985, ABC's Nightline presented Dr. John Wallace, who argued that Huckleberry was "the most grotesque example of racist trash ever written," and enraged, she wrote a column for the New York Times, resulting in Nancy Stiner presenting her with a letter in which Twain condemned racism. Fishkin debated with Wallace on CNN and CBS, pointing out that black oral traditions contributed to Twain's works, and throughout her career, Fishkin has talked to policymakers to change laws, much like her 1995 conversation with Texas senator West and his amendment to the education bill. Fishkin also presents her ideas to her college classes, describing the classroom situation and their interpretations of Huckleberry.

For Fishkin, Twain might be the "consummate Rorschach test" for anyone who attempts to understand America, and in the "Ripples and Reverberations" chapter, she avoids racial issues and provides the reader with information and details regarding Twain's universality within society. She states that businesses realized Twain's image could sell products, schools are named after him, he is cited in publications, and his characters have acquired a place within American popular culture, such as the 1917 song, "Huckleberry Finn." The Prince and the Pauper and "The £1,000,000 Bank-Note" attract producers, and versions of Huckleberry Finn, Tom Sawyer, and A Connecticut Yankee appear on cable television. Twain's political attitudes shape decisions, and Chuck Jones created the Road Runner and Coyote using Twain's characters in Roughing It. Psychics write books about Twain, he has turned up in novels, and impersonators give performances. Twain had an interest in inventions, and spent thousands of dollars on the Paige typesetter because he felt that printing technology was important for progress.

As a whole, Lighting Out for the Territory pertains to "Mark Twain in His Times," and in the Epilogue, Fishkin effectively concludes that Twain helped his readers begin their journey towards modernity, helped writers depict vernacular speech on the page with fluidity, and was a model of a writer who examined culture without losing its drama and narrative. She demonstrates that Twain speaks across time to generations about slavery, offering options and solutions to questions of personal and national identity, and that the availability of his work is essential for all readers. Throughout Lighting, both Fishkin's valuable discoveries and the reinforcement of well-known truths enable the reader to further individual knowledge and obtain a sense of how biographical factors influence a writer's work.