he's monosenior william lynn. from 1992 to 2004, the man tapped by the archdiocese to investigate abuse, lynn faces up to 14 years in prison if convicted of endangering the welfare of two children raped by other priests, priest lynn allegedly knew to be sex offenders. >> this is about evil men being held accountable for depickible acts. >> reporter: the charges of one respected analyst agrees could rock the vatican. >> they say this is the precede precedent, the first time in american prosecution holding accountable a person who didn't do the abusing but was we believe negligent in his authority. >> reporter: according to the grand jury report, lynn learned a priest fondled a young boy, that priest was sent to a sex offender program, yet, lynn allegedly lied about what