LOS ANGELES (thefutoncritic.com) -- The latest development news, culled from recent wire reports:

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Yahoo has shut down Yahoo Screen, the video hub home to such original series as "Community" (Variety.com); Virginia Madsen will guest on "Elementary" as "a former NYPD detective involved in a budding relationship with Gregson (Aidan Quinn)" (EW.com); Robbie Amell will reprise his role as Ronnie Raymond on "The Flash," albeit as his villainous Earth 2 counterpart Deathstorm (EW.com); and Xander Berkeley's role on "The Walking Dead" as been confirmed as Gregory, "the leader of the Hilltop Colony, a coward to the core and a total nightmare for Maggie and Rick" (TVLine.com).

PLUS, WHILE WE WERE ON HOLIDAY BREAK... - Charles Aitken has been cast as Benjamin Franklin's arch enemy on "Sleepy Hollow," "a twisted, mysteriously brooding genius whose talents include alchemy" (TVLine.com); Kristen Bell will lend her voice to "iZombie" in a voice-over role for the show's eleventh episode (EW.com); and Betty Gilpin is bound for at least two episodes of "Elementary" as "a brilliant and socially awkward software engineer, who meets Sherlock (Jonny Lee Miller) and Joan (Lucy Liu) during a murder investigation" (EW.com).