In August 2019, FBI Special Agent Scott Payne stood in a Georgia parking lot while neo-Nazis scanned him with a tool meant to detect GPS trackers. It beeped near his truck, detecting a device the FBI had installed. Luckily, someone suggested that power lines were causing interference, and Payne passed the test to join The Base, a white supremacist group planning to start a race war. Over the coming months, he would document their plots and participate in their rituals, gathering evidence that led to multiple arrests and prevented planned murders. In Code Name: Pale Horse (2025), he reveals what undercover work achieves and what it costs agents in trauma, strained relationships, and building connections with people they’ll betray.
In addition, based on his personal contact with the breed of domestic terrorists called “accelerationists,” Payne argues the US has underestimated how dangerous they’ve become. Unlike groups such as the Ku Klux Klan that seek influence within existing systems, accelerationists want to destroy the government entirely and replace it with a white ethnostate, hastening what they see as the inevitable breakdown of society to establish a new social order. They recruit young men online, conduct military-style training, and plan attacks against minorities, Jewish communities, and government officials. Because the First...
Unlock the full book summary of Code Name: Pale Horse by signing up for Shortform.
Shortform summaries help you learn 10x better by:
Here's a preview of the rest of Shortform's Code Name: Pale Horse summary:
Just like in the movies, undercover agents create false identities to gather evidence—but unlike in the movies, it often takes months or years to build a case. While uniformed officers respond to crimes and detectives investigate from the outside, undercover agents join criminal groups to document what they’re doing and prevent violence. Payne contends that undercover work is essential because criminal groups meet privately, communicate through encrypted channels, and carefully screen newcomers, making it difficult for surveillance teams to observe them from the outside. Another challenge is that US law protects hateful speech until it becomes a conspiracy, and prosecutors need evidence of systematic criminal activity to build a case.
(Shortform note: Undercover work has long existed to address a conundrum: Some crimes have no witnesses because everything happens inside closed networks and nobody calls the police. What’s changed is the role that technology plays: Extremist groups use the internet to [spread their...
Though undercover work is harrowing, Payne contends it’s increasingly necessary to counter accelerationist white supremacy, which he sees as the most urgent domestic terrorism threat facing the US. He invokes the 9/11 Commission Report, which cited a “failure of imagination,” where officials didn’t anticipate that terrorists could hijack planes as weapons, as the reason for the government’s inability to prevent the attacks. Payne argues that a similar failure constrains Americans’ ability to envision the harm that accelerationist terrorism can inflict. But we don’t need to imagine what these extremists might do: He and other FBI agents have witnessed these groups’ planning firsthand and documented their preparations for mass violence.
What “Failure of Imagination” Really Meant
Payne borrows the “failure of imagination” concept from the 9/11 Commission, but the phrase is more contested than its canonical status suggests. The Commission’s report told a complex story, one in which...
This is the best summary of How to Win Friends and Influence People I've ever read. The way you explained the ideas and connected them to other books was amazing.
Payne argues that Americans suffer from a “failure of imagination” similar to their pre-9/11 mindset, where officials couldn’t envision terrorists using planes as weapons. This failure—our inability to imagine threats we haven’t personally experienced—leaves us vulnerable in many areas of life.
This exercise will help you consider what threats might exist that you’re not taking seriously because they seem unlikely or haven’t happened yet.
Think about a domain where you have responsibility (your workplace, your family’s safety, your community, an organization you lead). What threat in your domain might you be underestimating because it seems unlikely or hasn’t happened in your experience?
Payne succeeded at undercover work by staying close to his authentic self—using real skills, genuine personality traits, and actual experiences—while adapting to very different environments. But he also struggled with the line between performance and reality: Sometimes you genuinely connect with someone different from you, and sometimes you might be compromising your values.
Think about a situation where you interact with people whose values or worldview differ significantly from yours (such as family members with differing politics, colleagues with different priorities, community members with opposing views, and in online discussions about controversial topics). What makes this situation challenging?
"I LOVE Shortform as these are the BEST summaries I’ve ever seen...and I’ve looked at lots of similar sites. The 1-page summary and then the longer, complete version are so useful. I read Shortform nearly every day."
Jerry McPhee