Fringe's Observer is coming to Person of Interest. Michael Cerveris has signed on to guest star in an October episode of the CBS procedural. Both shows are exec produced by JJ Abrams. Here is his character description, courtesy of TVLine:
Cerveris will play Jarek Koska, a highly organized and educated new breed of gang leader. Koska is an innovator, an entrepreneur — imagine Steve Jobs running MS-13. But for all that ruthless intelligence, he’s not above solving problems with brutal force.
Person of Interest premieres on September 22.