According to TV Guide, Cohan will play Maggie, daughter to Wilson's Herschel, an owner of a farm that Rick, Lori and the gang stumble upon.
"[Herschel] is the patriarch of the family," Gale Anne Hurd, 'The Walking Dead' executive producer, told TV Guide. "He's a veterinarian with a great sense of humanity and a very unique take on the Walkers."
Meanwhile, like in the comic books, Cohan's Maggie will be a love interest for Steve Yuen's Glenn.
In other TV News ...
• CNN's Nick Charles has died. The veteran sportscaster who has been battling bladder cancer was 64. [CNN]
• Ed Asner has landed a new role. The 'Mary Tyler Moore' actor will guest star in the Canadian comedy 'Michael: Tuesdays & Thursdays' as a psychiatrist. [Hollywood Reporter]
• 'Suits' is stocking up with guest stars including veterans from 'Hellcats' and 'Lincoln Heights.' Sharon Leal will play a consultant and and Russell Hornsby a man from Jessica's (Gina Torres) past. [THR]
• FX's new Elijah Wood-starring 'Wilfred' was the network's most-watched comedy premiere.The premiere and encore telecast were watched by 3.8 million viewers. [FX]
• Another familiar face is returning to 'One Life to Live.' Erin Torpey, who spent 13 years on the soap, will return in a new role before the series ends in January. [TV Guide]