The turning point for former FBI agent Jana Monroe came when her husband couldn't find a single kitchen knife in their home. Advertisement Advertisement"I'd been working several cases where a knife was involved," said Monroe, who spent over 20 years as an FBI agent across several units. She gathered every knife in the house and hid them in the clothes dryer in the basement of the family's three-story townhouse. They're going to have to bring their own knife,'" Monroe told Business Insider for an episode of its video series "How Crime Works." Jana Monroe, at the U.S. Department of Justice in Washington, D.C., in 2004.Dennis Brack/Bloomberg via Getty ImagesHer husband came home while Monroe was away interviewing female prisoners.