On Monday's episode of Castle (10/9c, ABC) Detective Beckett (Stana Katic) and Castle (Nathan Fillion) investigate the murder of a man who appears to have a double identity, a concept not unfamiliar to the show's creator, Andrew W. Marlowe.
Check out photos of the Castle cast
No, Marlowe doesn't lead a double life, but his show is increasingly a mix of cops-and-robbers procedural fun and good ol' family drama...
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