A monthslong investigation by CBS News punctures Thomas Crooks’ secrecy to reveal the broadest portrait yet of the lonesome ...

One year after the attempted assassination of President Trump, experts suggest Thomas Matthew Crooks was likely seeking ...

Thomas Crooks’ cousin recalled the gunman’s father, Matthew Crooks, doing everything in his power to keep the two ...

Emails and essays obtained by CBS News shed new light on Thomas Matthew Crooks, the 20-year-old who opened fire at a Trump rally in Butler, Pennsylvania.

Thomas Crooks left no manifesto or explanation for why he tried to kill the former and future president in Butler a year ago. But a CBS News investigation is shedding light on his secret double life.

A year after an assassination attempt shocked Butler County, the motives of the gunman, Thomas Matthew Crooks, remain largely ...