King County Sheriff John Urquhart’s chief of staff failed a polygraph test required for his employment in 2012 and shouldn’t have been hired, a detective who reviewed the test results later concluded.

The CIA, the FBI and other federal agencies are using polygraph machines more than ever to screen applicants and hunt for lawbreakers, even as scientists have become more certain that the equipment is ...

Gary Coleman’s ex-wife, Shannon Price, took a polygraph test about the late actor’s fatal fall — and the test administrator wasn’t impressed with her results. “The [polygraph] recording is 100 percent ...