How the Unabomber’s Brother David Kaczynski Helped Capture the Terrorist

The Federal Bureau of Investigation struggled for nearly two decades to identify the person behind a nationwide bombing campaign that killed three people and injured dozens of others. That suspect, known as the Unabomber, was elusive until in 1995 when he wrote a 35,000-word anti-technology manifesto that he demanded authorities publish.

FBI Director Louis Freeh and Attorney General Janet Reno approved the task force’s recommendation to publish the essay in hopes that a reader could identify the author, despite their fears that doing so would give into the wants of a terrorist. 

Their decision proved crucial, because when a woman named Linda Patrik read the manifesto in The Washington Post, she recognized specific phrasing, ideological arguments and writing habits that were similar to her brother-in-law, Ted Kaczynski. She persuaded her husband, David Kaczynski, to read the writings, which led him to eventually call the FBI and give them his brother’s name. 

The tip from David was among hundreds the FBI received, but he was convincing. He told investigators that Ted was troubled, taught at the University of California at Berkeley—where two of the bombs had been placed—then lived for a time in Salt Lake City before settling permanently into a small cabin that he built near Lincoln, Mont., a town in the western part of the state with fewer than 1,000 residents. 

David gave investigators letters and documents that were written by Ted, which were analyzed by the bureau’s linguistic analysis. They determined the author was likely the same person who wrote the manifesto. 

On April 3, 1996, investigators arrested Ted Kaczynski and combed his 10-foot-by-14-foot cabin where they found bomb components, more than 40,000 handwritten journal pages that included bomb-making experiments and descriptions of Unabomber crimes. They also uncovered one live bomb that had been readied to be mailed.

The Justice Department gave David a $1 million reward for identifying the Unabomber in 1996. David said he would use the money to help ease the grief of bomb victims' families; he eventually created the Unabomb Survivors Fund with $680,000, the balance of the reward money after taxes and legal fees.

"My mother and I respect their loss and wish to do whatever we can to ease their grief," David said at the time. “I know that mere money cannot compensate for the loss of a loved one or rebuild a shattered life.”

The next year, David formed an unlikely friendship with one of his brother’s victims, Gary Wright, who was badly injured in 1987 when a bomb was left outside of his computer store in Salt Lake City. Two hundred pieces of shrapnel were removed from Wright’s body, and he had to go through about a dozen surgeries.

“We were both on healing journeys of a sort,” David told CBS News in 2025. “But we were both looking for a path forward that would be positive, and we had so much in common."

David hesitated to talk publicly about his brother ahead of Ted’s 1998 sentencing, but his legal advisor gave him some advice, David told the Duke University Press. 

The advisor sat him down and said, “David, if you don’t talk about your brother’s mental illness, then the only image people will have of him is the portrait of an irredeemably evil man painted by federal prosecutors. Frankly, if the public doesn’t get a glimpse of Ted through his family’s eyes, then he’ll almost surely get the death penalty.” 

David knew it meant that he would have to talk if he wanted to spare Ted’s life and in turn, spare his mother her own suffering. However, he didn’t get to talk to his brother again. 

“I write to Ted two or three times a year,” he said in 2016. “What little I know about Ted’s current circumstances comes from the media because he doesn’t respond to my letters. As a prison inmate, he has a right to privacy, even from his family, and I have to respect that.”

David speaking up about his brother’s childhood, mental illness and experiments he underwent while he was a teenage student at Harvard likely helped save Ted, who was convicted of 13 federal bombing-related charges, from going to death row. Ted was instead sentenced to four life sentences plus 30 years without the possibility of parole.

So, David kept talking. 

He has lectured frequently about mental illness and has presented to the American Association of State Forensic Directors, the National Alliance on Mental Illness, the New York State District Attorney’s Association, the National CIT Conference and the National Association of Social Workers, among other audiences.

He previously served as executive director of New Yorkers for Alternatives to the Death Penalty and as assistant director of the Equinox Shelter for runaway and homeless youth

In 2016, David wrote a memoir titled Every Last Tie: A Memoir of the Unabomber and His Family.