Nathan Fillion

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ABC’s week shapes up this way:

* Mondays, starting March 9, the Alphabet will preem the crime-mystery skein "Castle." Show takes over following the finale of the Ashton Kutcher/Tyra Banks reality skein "True Beauty," which airs there starting in January.

"Castle," from ABC Studios, stars Nathan Fillion as a novelist who discovers that a copycat killer is re-enacting crimes from his books. Andrew Marlowe created and exec produces; Armyan Bernstein, Barry Schindel, Rob Bowman and Laurie Zaks are also exec producers.

* The Tuesday 10 p.m. slot will be filled in the winter with "Primetime: What Would You Do?," which bows Jan. 6. "Primetime" will then make way for the new version of "Cupid," which airs there starting March 24. (Both shows fill the void left by the vacating "Eli Stone.")

Rob Thomas is behind the remake of his 1990s skein "Cupid," this time starring Bobby Cannavale and Sarah Paulson. ABC Studios is the studio; Thomas exec produces with Jennifer Gwartz, Danielle Stokdyk, Dan Etheridge and Diane Ruggerio.

* Wednesdays at 10 p.m. — as previously announced — will be filled by "Life on Mars" beginning in January. But once "Mars" ends its run, ABC is set to preem the cop drama "The Unusuals," which bows there on April 8. "Dirty Sexy Money" had previously occupied that hour.

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