walking-dead-conan-norman-reedus-danai-gurira.jpgNews and notes from all over the TV world:

– The cast of “The Walking Dead” will make its first joint late-night appearance on “Conan” Feb. 6, three days before “TWD” returns to AMC. Andrew Lincoln, Lauren Cohan, Norman Reedus, Danai Gurira, Steven Yeun and Melissa McBride will all join Conan O’Brien for what TBS is calling an “exclusive” appearance.

– Lifetime’s adaptation of “Flowers in the Attic” scored big ratings Saturday night (Jan. 18), which bodes well for the already-in-development sequel “Petals on the Wind.” The movie based on V.C. Andrews’ novel delivered 6.1 million viewers, the most for an original movie on ad-supported cable since November 2012.

– “Battlestar Galactica” and “Dollhouse” alum Tahmoh Penikett is playing a pivotal role in “Criminal Minds'” 200th episode. It’s been revealed that his previously teased role will resolve some of the questions surrounding JJ’s (A.J. Cook) time away from the BAU. Penikett’s Michael Hastings worked with JJ during her time at the DoD in Season 6. [TVLine]

– Oscar-nominated writer John Ridley (“12 Years a Slave”) has added directing duties to his writing and executive producing the ABC pilot “American Crime.” The drama, which ABC greenlit last week, follows a high-profile trial and the effect it has on the lives of those involved. It’s Ridley’s first TV project since HBO passed on his pilot “Da Brick” in 2011. [Hollywood Reporter]

– The second (and final) season of “Ripper Street” has a U.S. premiere date. BBC America will debut the new season of the cop show set in 1890s London at 10 p.m. ET Saturday, Feb. 22.

Ken Burns has added a new long-form documentary to his plate for PBS: “Country Music,” set for 2018, will trace the art form’s evolution over the 20th century and its steady rise in popularity. Burns is also working on long-form documentaries about Jackie Robinson, the Roosevelts and the Vietnam War, in addition to a 90-minute film called “The Address,” which airs in the spring.

– More performers have been announced for the 56th annual Grammy Awards, including Gary Clark Jr., Hunter Hayes and a star-studded finale that will feature Nine Inch Nails, Queens of the Stone Age, Dave Grohl and former Fleetwood Mac frontman Lindsey Buckingham. They join previously announced performers Sara Bareilles, Carole King, Daft Punk, Pharrell Williams, Stevie Wonder, Kendrick Lamar, Imagine Dragons, John Legend, Macklemore & Ryan Lewis, Metallica, Paul McCartney, Kacey Musgraves, Katy Perry, Ringo Starr, Robin Thicke, Chicago, Taylor Swift, Keith Urban and a special performance by Merle Haggard, Kris Kristofferson, Willie Nelson and Blake Shelton.

– A pretty little liar is heading over to the Season 2 finale of “Baby Daddy.” Some new photos of Lucy Hale‘s guest gig over on the ABC Family series have surfaced to tease the Feb. 5 episode. [E! Online]

– Production is in its first stages at Amazon to adapt a TV series version of graphic novel “Barbarella,” previously (and infamously) adapted as a Jane Fonda movie in 1968. The sci-fi story follows a woman charged with finding and eliminating an evil weapons manufacturer. Amazon is currently looking for a showrunner in anticipation of a pilot pickup. [Deadline]

– PBS Kids has announced the production of its newest series: “Odd Squad,” a live-action show designed to help kids ages 5-8 learn math. The show focuses on two young agents, Olive and Otto, who are part of an agency whose mission is to save the day whenever something unusual happens in their town. A math concept is embedded in each of their cases.

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