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04/02/2013 04:14 am ET | Updated Apr 02, 2013

'Castle' 100th Episode: Beckett's Birthday Surprise For Castle May Have Gone Too Far (VIDEO)

With Castle confined to a wheelchair and crutches, he found himself drawn into a "Rear Window" scenario on the 100th episode of "Castle." Utilizing a pair of binoculars, he witnessed what he was certain was a murder in a house nearby -- of course, it happened where he couldn't see -- as well as the possible disposal of a body.

Throughout the episode, he grew more and more certain of the foul play, despite the fact that Esposito and Ryan gave in to his pestering to investigate, finding nothing suspicious. Finally, on his birthday, he couldn't take it anymore. He was by this point obsessed with finding out what happened, and his latest theory was that the girlfriend's body was in the refrigerator.

So Beckett agreed to investigate. To Castle's horror, she was attacked while he was watching via the binoculars. Injury be damned, Castle barged over there with Esposito and Ryan to save his woman. Only, when he got there, the lights went up and the whole thing was revealed to have been a staged production for his birthday.

While an unorthodox gift to be sure, the writer in Castle couldn't help but be impressed with the elaborate ruse, and he decided this was easily the best birthday gift he could have ever gotten.

One hundred cases down on "Castle," Mondays at 10 p.m. ET on ABC. How many more to go?

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