Mar 10, 2013 2 min read

Q. What’s behind all the switching around of newscasters lately? I see that Chris Cuomo is now on CNN, and David Muir has replaced him on “20/20.” – Jim Glenn, Columbus, Ohio

A. There’s no general answer, since each network’s and newscaster’s situation differs. That goes as well for Jake Tapper and Sharyn Alfonsi, who also left ABC recently … he to join CNN as well, she to become a correspondent for Showtime’s “60 Minutes Sports.”

However, we will say that changes have been afoot at CNN since former NBC executive Jeff Zucker – who enjoyed a successful run as executive producer of “Today” – became the cable news network’s chief recently.

Q. I heard that “Emily Owens, M.D.” was canceled, but I’ve kept seeing new episodes. Did the network change its mind? – Kathy Barnes, Milwaukee

A. No. The CW merely was playing off the rest of the episodes of the Mamie Gummer series that had been filmed. The show is gone now, replaced on Tuesdays by the melodrama “Cult.”

Q. I’ve heard there’s going to be another “NCIS” series next season. Is this true? – Carol Green, Stuart, Fla.

A. The pilot for it has just been filmed, and CBS is expected to air it as an episode of “NCIS: Los Angeles” before the current season ends … and even though the network hadn’t ordered the show officially as this was being written, it’s about as sure a bet as there is to be a fall newcomer, simply given the success of the franchise to date. Kim Raver, late of “Grey’s Anatomy,” and John Corbett (“Sex and the City”) have been cast in the new “NCIS” that will be about a mobile team traveling throughout the country.