By Jay Bobbin

Zap2it

Q: Do you know what CBS plans to air in David Letterman’s time slot until Stephen Colbert takes over in September?

— Tim Freeman, Wheeling, West Virginia

A: You may have part of your answer already, if you’ve been watching on recent weeknights. For the next several months, the network is opting for repeats of some of its drama series, each getting a one-week stint — except for the first one, “The Mentalist,” which ended its CBS run in February and is getting a litte more than two weeks in the late-night berth.

Other shows slated to get such treatment in the coming weeks include “Blue Bloods,” “Hawaii Five-0,” “Elementary,” “CSI: Cyber” and “The Good Wife.” Reruns of the crime procedurals typically have worked well for CBS in prime time … and since “The Good Wife” is more serialized, we’d expect that week of episodes will be chosen carefully to maintain that continuity.

Q: I’m a big fan of Will Estes on “Blue Bloods.” Is he related to Rob Estes? Does he have an address where fans can write?

— Norma Lettecci, Schaumburg, Illinois

A: Estes actually is the actor’s middle name, and his real last name is Nipper, which he went by professionally earlier in his career. Estes, however is Rob’s true last name — and long story short, they aren’t related.

The postal service is the best way to write to Will, since as he confirmed for us when we spoke with him about his series’ 100th episode several months ago, he isn’t on social media. (You might see pages dedicated to him, but they’re not run by him.) We’d suggest addressing your letter to him in care of the studio behind “Blue Bloods” … CBS Television Studios, 7800 Beverly Blvd., Los Angeles, CA 90036.

Q: We love James Marsters, who played Spike on “Buffy the Vampire Slayer,” and are wondering what he is doing now.

— Madeleine Abbott, New Smyrna Beach, Florida

A: The actor’s most recent credits have included multiple appearances on both “Hawaii Five-0” and “Witches of East End,” and he has been cast opposite Eddie Izzard and Karen Gillan (“Selfie”) in “The Devil You Know,” a Salem Witch Trials-based HBO series pilot whose creators include “Orange Is the New Black” and “Weeds” mentor Jenji Kohan.

Q: What happened to the actors on “CSI: NY”? I have seen only Gary Sinise since.

— Leslie Emery, via email

A: You’ll be seeing a lot more of Sinise, since he’ll return to CBS next season in “Criminal Minds: Beyond Borders,” a spinoff whose pilot aired as an episode of the parent show. As for his principal female partners on “CSI: NY,” Melina Kanakaredes appeared recently in an episode of CBS’ “Hawaii Five-0,” and Sela Ward has been cast as the U.S. president in a movie sequel to “Independence Day” that’s being planned for release next summer.

Anna Belknap also turned up in a “Hawaii Five-0” story this year, and she’s filmed a role in a movie titled “No Way Jose” for director and co-writer Adam Goldberg. Belknap’s TV “husband,” Carmine Giovinazzo, has been in the USA Network show “Graceland” since. Hill Harper became a regular on USA’s “Covert Affairs,” and he’s also headed back to series work on CBS this fall, co-starring in an adaptation of the Bradley Cooper movie “Limitless.”

Eddie Cahill moved over to another CBS show, “Under the Dome” (which returns for its third summer season June 25), and Robert Joy has turned up since his “CSI: NY” duty on such series as “Grey’s Anatomy,” “The Good Wife” and “Masters of Sex.” And A.J. Buckley — another recent guest star on “Hawaii Five-0,” which might owe to the fact “CSI: NY” producing veterans Peter M. Lenkov and John Dove work on that show — will be a co-star in Season 2 of TNT’s “Murder in the First,” which starts June 8.

— Send questions of general interest via email to tvpipeline@gracenote.com . Writers must include their names, cities and states. Personal replies cannot be sent.

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