Part 2. Last week’s opening installment of this scripted Discovery miniseries was so unexpectedly good, it caught many critics by surprise, delighting them in the process. I count myself among them, and urge you to catch up, dive in, and keep going. In this eight-part miniseries, Paul Bettany plays the Unabomber, Ted Kaczynski, and Sam Worthington is the FBI profiler James Fitzgerald, who pursued the Unabomber for years.