A most-wanted fugitive works with a rookie FBI profiler to take down criminals and terrorists in this crime series. Series 1 sees our introduction to former government agent turned criminal Raymond Reddington who, after turning himself into the FBI, says that he will help them capture some of the world's most dangerous criminals. However, he will only talk to one agent, Elizabeth Keen and as the series progresses we slowly get hints of why this might be while simultaneously following the FBI's progress in catching the criminals Reddington is pointing his finger at.