Castle Season 4 ‘Heroes & Villains’ Preview 9/26/11

When an ex-con is mysteriously slain in an alley, Castle and Beckett believe a vigilante is behind the murder. But efforts to identify their suspect are thwarted when they discover that he roams the city in a Superhero costume — and may indeed be a Superhero.

Can they capture and unmask the killer before he strikes again?, on “Castle,” MONDAY, SEPTEMBER 26 (10:01-11:00 p.m., ET), on ABC. Source: Have U Heard