but "dateline nbc" reviewed an rcmp summary of the mission. an undercover officer approached denis in prince george. he was looking for someone, he said, but didn't know his way around town. denis agreed to help him. about a week later, another question -- would denis like to make some money on the side delivering bags mostly, their contents unknown. no problem, said denis. and bit by bit as days went by, denis became fully involved in what he clearly believed was a criminal gang. after a couple of months by august, he was helping to smuggle illegal cigarettes and kohl. he skpaifr he exchanged stolen diamonds. he even transport guns, or so he thought. >> over time the target is led to believe that he is an up-and-comer in the criminal organization. >> then it got more serious. denis was asked to threaten a man. he did, though he said he didn't like it. and he guarded a hotel room door as an undercover officer savagely beat a woman. denis never suspecting it was all an act. >> these undercover officers, they're amazing actors. and they're descr