Part 8/17:
Her recent work on the FBI's investigation into the serial killer Israel Keys exemplifies her methodical approach. Callahan detailed how she uncovered classified documents through legal battles, leading her to piece together a case that potentially links Keys to numerous unsolved crimes across the U.S. Her dedication to digging through redactions, suing the government, and piecing together the puzzle reflects her relentless pursuit of truth—an investigative process that she says she "loved" and found almost addictive.