The great ๐๐๐ฎ๐ฅ ๐๐๐ญ๐ญ๐๐ง๐ฒ, as serial killer Theodore Kaczinski, gives an utterly masterful, mesmerizing performance: restrained, almost bland ("almost") at times; but supremely cunning, preternaturally composed, and at times extremely menacing/dangerous. A confident (yet understandably apprehensive...) FBI forensic linguist pioneer (Jim Fitzgerald, portrayed by Sam Worthington) is bound for an epic moodswing, as Kaczynski/Bettany fully intends to dominate, bewilder, and humiliate him. And so quietly.