A Routine Life, Until It Wasnโt
“Before Thanksgiving 2023, Thomas Crooks’ online life was fairly routine for a 20-year-old.” He scrolled through social media, listened to music, visited news sites, and browsed Reddit. But beneath the surface, “a plan for mass violence was brewing,” according to a months-long CBS News investigation. The boy who once kept people at a distance had become adept at compartmentalizing his life.
Friends rarely visited the Crooks family home. Even as a child, he let few people in. By late 2023, his secret world included “building homemade improvised explosive devices in his bedroom and planning an assassination.”
A Childhood Marked by Isolation
Crooks was born in 2003 and spent his life in Bethel Park, Pennsylvania. His childhood was typical in some waysโhe loved Legos, model airplanes, the Steelers, and cooking with family. His parents were both social workers who โtook pride in their work and family.โ
In a college video, Crooks described the family’s holiday traditions: โFor Thanksgiving, me and my dad will cook turkey and mashed potatoes togetherโฆ on New Yearโs Eve, my mom and I will bake the pork and the sauerkraut together.โ
But even lifelong friends like Tristan Radcliffe, who met Crooks in kindergarten, โwere never invited to his home,โ and the family โdidnโt interact muchโ with neighbors. Radcliffe said, โHe was coolโฆ a ‘nice’ boy who ‘kept to himself.’โ
Engineering Dreams Mask a Hidden Agenda
In high school and later at the Community College of Allegheny County, Crooks excelled. He scored a 1530 on his SATโโputting him in the 99th percentile nationally.โ He wanted to transfer to a four-year engineering program. One professor described him as a โstar studentโ who โhad his head on straight and was on a path [to] success.โ
Crooks once designed a 3D-printed chessboard for the visually impaired that exceeded expectations. He routinely checked in with professors about grades and projects. But many classmates didnโt remember himโhe left “little impression.”
Crooks asked to be excused from one assignment requiring an audience of five adults, explaining in an email: โI currently only live with my Mom and Dad. There are no other adults in my houseโฆโ

Shifting Habits and Growing Secrecy
In summer 2023, Crooks bought a rifle from his father and joined the Clairton Sportsmenโs Club, visiting over 40 times in the last 11 months of his life. His internet behavior changed. He began using โencryption services that masked some of his internet use,โ including Mailfence and Mullvad VPN.
CBS Newsโ analysis of his internet activity revealed an uptick in searches related to โnews, explosives and ammo, and secrecy.โ On Dec. 6, 2023, Crooks browsed โnews sites and the White House websiteโs archives,โ followed by visits to firearms websites. On Jan. 24, 2024, he logged 1,364 internet requests and started consistently using a VPN after that.
Mullvad CEO Jan Jonsson told CBS, โIf somebody abuses the service for nefarious purposes, we cannot block that individual user and unfortunately canโt provide any additional information about them.โ
Living Two Lives: Engineering Student and Aspiring Assassin
While applying to four-year universities, Crooks was also ordering explosive fuel. โOne day, he emailed himself to review his personal statementโฆ on another, he emailed customer service to complain that the explosive fuel he ordered had not yet shipped.โ
His father later told investigators he saw signs of Crooksโ deteriorating mental health. โHe observed several instances of his son dancing in his bedroom throughout the nightโฆ talking to himself with his hands moving.โ Radcliffe, too, noticed Crooks acting differentlyโโHe would always move his legs around a lot, and he would kind of talk pretty fast.โ
Also Read: Brands in Orbit: The Growing Battle Over Space Advertising
The Countdown Begins
Crooks graduated in May 2024. On June 14, he emailed the registrar asking about his diploma. In the following weeks, he obsessively researched presidential candidates, including searches for โDNC conventionโ and โwhen is the RNC in 2024.โ He visited the Butler Farm Show rally grounds on July 7 and returned on July 13 to commit the attack.
That morning, Crooks loaded his trunk with a rifle, a drone, and two homemade bombs. He stopped at a store to buy ammo, then drove to Butler. At 3:51 p.m., he flew a drone over the rally site for nearly 12 minutes, possibly to scout Trumpโs podium location.
Local officers grew suspicious. โHe was walking aroundโฆ looking directly at the window I was positioned at,โ a sniper recalled. Police photographed Crooks and discussed alerting the Secret Service. But that warning never reached those in charge of protecting Trump.
Moments from Tragedy
At 6:02 p.m., Trump took the stage. Three minutes later, Crooks climbed a rooftop. A local detective saw him and began climbing up. Crooks looked back โsurprised,โ then โturned his gun toward the detective.โ
At 6:11 p.m., Crooks fired eight shots. He killed firefighter Corey Comperatore, injured Trump and two others. A Secret Service sniper then fatally shot Crooks in the face. โThe shooter is down. Heโs down hard,โ a local officer radioed.
Trump, bloodied, raised his fist to the crowd and shouted: โFight! Fight! Fight!โ
The Aftermath: No Clear Answers
That night, Crooksโ father called 911, worried his son hadnโt returned from the range. When agents arrived, he asked, โIs it true?โ CNN had called to say his son โshot Trump.โ
Investigators combed through Crooksโ life. They subpoenaed records, interviewed everyone from professors to store employees, and examined surveillance footage. Despite this, โmany unanswered questions about his motivation remain.โ
Crooks โleft no known written explanation.โ His political beliefs are unknown. โWas the Butler rally just a convenient optionโฆ or was he committed to shooting Mr. Trump?โ
A Family in Hiding
Crooks’ family has since disappeared from public life. Their home is now monitored by security cameras and blurred on Google Maps. A neighbor described their presence as โghostlike.โ Crooksโ mother resigned from her job of 27 years, writing: โCertain circumstances have left me with no other optionโฆโ
Both she and her husband let their social work licenses expire.
Still Searching for Why
Professor Patricia Thompson compiled Crooksโ work in hopes of finding answers. โWhy would this kid who had his whole futureโฆ laid out for himโฆ why would he do something like this?โ
Radcliffe summed it up: โIโm still in disbeliefโฆ it just doesnโt make sense. It just doesnโt make any sense whatsoever.โ
Source: CBS News investigation



