These are true stories of how John Cronin, CPA, spent 33 years at the GAO, investigating fraud against the U.S Government. He saved taxpayers untold millions of dollars. His travels took him from Congress to the White House to European capitals to slaughterhouses in the Midwest. He had a second sense for finding and documenting government fraud and waste. His involvement in Watergate, Irangate, Marcosgate, HUD scandals, and countless others earned him the title "Gatekeeper.