The Emmy award-winning actress, director and choreographer is set to reprise her role as Jackson Avery's (Jesse Williams) mother, Catherine, according to TV Guide.
TV Guide also reports that Allen will spend some time behind the camera as well as in front of it on the "Grey's" set this season: She's confirmed to direct the third episode.
In other casting news ...
Chris Diamantopoulos heads to "The Goodwin Games." The real-life husband of one of the show's stars, Becki Newton, will play Chad Morrow, the most beloved doctor in the Goodwins' hometown. He will go head-to-head with Chloe's (Netwon) brothers, Henry (Scott Foley) professionally and Jimmy (TJ Miller) romantically. [TV Guide]
"Touch" recruits two more guest stars. The cast for the second season of the Kiefer Sutherland drama continues to grow, with "Inception" actor Dileep Rao and "24" alum John Boyd set to recur for multiple episodes. Rao will play a "wealthy and influential shareholder at Aster Corp," while Boyd will play a brilliant mathematician and friend to Lukas Haas' character. [THR]
Wendy Crewson wants "Revenge." The "24" star will play Helen, "a powerful business executive who has dealings with Conrad Grayson (Henry Czerny)" in Season 2 of the soapy ABC drama. [TV Guide]
Related on HuffPost:
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more