Roy Cohn, a legendary and contentious attorney, was a power broker in New York City's rough and tumble worlds of commerce and politics. Cohn is also well-known for being Donald Trump's former personal lawyer, fixer, and mentor. He served as Senator Joseph R. McCarthy's principal counsel during the 1950s Communist investigations. A new documentary on Cohn's life will premiere on HBO in2019. It will focus on significant stages in his life and will use extensive, newly uncovered archival footage.