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Castle - Season 4 Episode 0 - Sneak Peek

In a riveting opening that picks up just moments after last season's climactic finale, Detective Beckett fights for her life as Castle, plagued by guilt over his role in the events, struggles to uncover who's behind her brutal shooting. Meanwhile, back at the precinct, Ryan and Esposito have to adjust, as Victoria "Iron" Gates becomes the precinct's new uncompromising Captain.

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?

Gunshots, a fleeing van and a massive blood pool all point to murder, but when Castle & Beckett arrive at the crime scene, they discover that it lacks something - the victim! The investigation leads to the cutting-edge world of life-extension science, a cunning high-tech researcher, and a sleazy porn mogul who invested in a modern-day "fountain of youth." Meanwhile, Alexis finds out whether she got into Stanford.

The shooting death of a young woman points to Ryan's stolen gun as the murder weapon - the gun stolen earlier by serial killer 3XK. Now Castle and Beckett are up against the clock to track down 3XK before he kills again.

Castle & Beckett work a murder case around the theft of a valuable sculpture. Serena Kaye, a smart, sexy insurance investigator, joins Castle & Beckett in the investigation, but she also has her eyes set on Castle, all the while hiding a very important secret from the team. This summary has been brought to you by watch Castle online website, iwatchcastle.com.

Alexis has to go Skype with her boyfriend and Castle tries to tell his daughter that maybe it is not such a good idea of rearranging your schedule based around another person, only to have Beckett call him and drop whatever he is doing to go see the crime scene. At the crime scene Castle notices the Ghost Wranglers van were Castle and Beckett debate the merits of the show. Online Castle episodes can be found at iwatchcastle.com for free.

Martha and Castle are held hostage by bank robbers dressed in hospital scrubs. Beckett's rescue efforts are hindered by a strict hostage negotiator. Meanwhile, Alexis faces problems in her relationship with Ashley. Mr. Trapper calls the cops back because they want a bus, with tinted windows, in exchange for their pregnant teller, Simone — and the SWAT leader agrees, much to Beckett’s confusion. Online Castle episodes can be found at iwatchcastle.com for free.