When Donald Trump delivered a birthday toast to power lawyer Roy Cohn, back in 1986, 60 Minutes was there to record the future president's tribute to Cohn's loyalty. Much has been written about Cohn's influence on the young Trump and by listening through 60 Minutes' two interviews with Cohn, you can hear why the notorious lawyer is the subject of so much fascination. In never-before-broadcast conversations with Mike Wallace and Morley Safer, Cohn explains his fighter mentality and obsession with winning at all costs -- from his earliest days working alongside Senator Joseph McCarthy to his final months spent denying he was dying of AIDS.