1. He realised his mistakes and stopped spying, but eventually returned to his duplicitous role with a vengeance.
2. Carpenter frequently stole the spotlight from star Michael C. Hall with her impassioned turn as Dexter's foster sister Debra, a homicide detective whose caseload often overlapped with her duplicitous brother's own crimes.
3. Jonathan Walden, I find the implication of your assertion preeminently duplicitous, if not categorically impertinent.
4. So, with that in mind, how do the two spy agencies compare in terms of their dark and duplicitous deeds?