Summer Glau Pays A Visit To CASTLE

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Yes you read that correctly, we have a Mini-Firefly reunion coming to Castle featuring Summer Glau.

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Richard (Nathan Fillion) is set to visit Los Angeles and will run into an accomplished rival Private Investigator played by Summer Glau. They are competing to solve a murder and the episode involves a secret organisation called the Greatest Detective Society.

The episode is set to air on March 7 on ABC.

SOURCE: TVline.com