I initially thought this might just turn into a FBI vs. Serial Killer standard crime series, however, when we are properly introduced to Ted Kazinscky - it becomes truly gripping. Paul Bettany does an incredible job of playing the role of The Unabomber, Ted Kazincsky: dark, ominous, highly intelligent and manipulative. I was young when the real incidents happened in the 90's, but I felt the series was compelling whilst not straying too far from the truth about this story. I'd recommend a watch.