dr. benjamin church, part of general washington's inner circle, is also the most dangerous british spy in. washington blames himself for trusting church. but he's gone undetected for years. and after just two months in command, george washington manages to catch him. he's learning quickly. but this will not be the last time the commander in chief is betrayed by a trusted general. >> "i saw 1,000 riflemen and 40 horse." would you read this next bit yourself, sir? >> "this advice, it is the result of warm regards to my king, to the realm. make use of every precaution, or i shall perish." >> this really was a wake-up call for george washington that washington's got to get a more systematized intelligence operation. >> washington had some experience with intelligence. he saw the advantage of intelligence. he also knew we had to find out what they were doing before they were doing it. for us to be successful, we had to outthink 'em and outmaneuver 'em. >> with the chance the british already know more than he wants them to, washington must act quickly, strengthening defenses and, if possible, t

dr. benjamin church, a son of liberty and surgeon general of the continental army, part of washington's inner your excellency, 'tis true, then, what we hear? we're running low on powder? >> not at all, dr. church. we are in good stock. >> we intercepted this, sir. >> reverend west, can you please look into this immediately? >> certainly, your excellency. right away. >> now, we have all heard the childhood story that george washington cannot tell a lie. but that is a legend. fighting for the brits in the french and indian war washington is immersed in lies and espionage. knowing his enemy's skills of deception firsthand he must lie to keep his secrets. in the end, george washington will prove himself one of history's great spy masters. one british officer even blames the loss in the revolutionary war not on being outfought but on being outspied. >> any progress? >> it's full of figures about our troops and munitions. >> leave us. >> yes, sir. >> the signature, reverend. i want to know who wrote this treasonous letter. >> while this traitorous communication is caught in time, there's no telling

dr. benjamin church, part of general washington's inner circle, is also the most dangerous british spy inington blames himself for trusting church. but he's gone undetected for years. and after just two months in command, george washington manages to catch him. he's learning quickly. but this will not be the last time the commander in chief is betrayed by a trusted general. >> "i saw 1,000 riflemen and 40 horse." would you read this next bit yourself, sir? >> "this advice, it is the result of warm regards to my king, to the realm. make use of every precaution, or i shall perish." >> this really was a wake-up call for george washington that washington's got to get a more systematized intelligence operation. >> washington had some experience with intelligence. he saw the advantage of intelligence. he also knew we had to find out what they were doing before they were doing it. for us to be successful, we had to outthink 'em and outmaneuver 'em. >> with the chance the british already know more than he wants them to, washington must act quickly, strengthening defenses and, if possible, taking