Adam Stanton -  A brilliant surgeon and Jack Burden's closest childhood friend. Anne Stanton's brother. Jack persuades Adam to put aside his moral reservations about Willie and become director of the new hospital Willie is building, and Adam later cares for Tom Stark after his injury. But two revelations combine to shatter Adam's worldview: he learns that his father illegally protected Judge Irwin after he took a bribe, and he learns that his sister has become Willie Stark's lover. Driven mad with the knowledge, Adam assassinates Willie in the lobby of the Capitol towards the end of the novel.