Castle Season 4 Episode 4 – Castle s04e04 Kick the Ballistics, 404, 4x04, – Free TV – Stream – Summary: As Beckett fights for her life, Castle attempts to find the person responsible for the shooting, back at the precinct, Ryan and Esposito try to adapt to the new captain in charge. Castle and Beckett are after a murder suspect who's roaming the city in a Superhero costume. They think he's behind the killing of an ex-con, but it's a race to identify and catch him before he kills again............., Castle s04e04, Show airs on: Mon Oct 10, 2011, So don't forget to watch on ABC at 9:00 pm.