THE HECKS SPEND A NOT-SO-RELAXING THANKSGIVING AT FRANKIE'S PARENT'S, AND SIBLING RIVALRY REARS IT UGLY HEAD WHEN FRANKIE AND HER SISTER, JANET, DON'T SEE EYE TO EYE ON PARENTING TECHNIQUES, ON ABC'S "THE MIDDLE"

Molly Shannon Guest Stars as Frankie's Sister, Janet

Marsha Mason and Jerry Van Dyke Return as Frankie's Parents, Pat and Tag

"Thanksgiving III" - Frankie's parents, Pat (Marsha Mason) and Tag (Jerry Van Dyke), invite the Hecks to spend a few days at their house to celebrate Thanksgiving together. But the festivities begin to fall apart quickly when Frankie's sister, Janet (Molly Shannon), and her family also join in, and soon the siblings are at each other's throats over their widely differing parenting techniques. Meanwhile, Mike tries to offer some advice to Axl on how to pick up girls when he witnesses his son trying to impress a pretty mini-mart cashier - and fails miserably; Brick attempts to prove his innocence when he is accused by Janet of damaging her daughter's expensive toy; and Sue is stoked when Frankie, Pat and Janet invite her to take part in their gossip sessions, on "The Middle," WEDNESDAY, NOVEMBER 23 (8:00-8:30 p.m., ET) on the ABC Television Network.

"The Middle" stars Patricia Heaton as Frankie, Neil Flynn as Mike, Charlie McDermott as Axl, Eden Sher as Sue and Atticus Shaffer as Brick.

Guest starring are Marsha Mason as Pat Spence, Jerry Van Dyke as Tag Spence, Molly Shannon as Janet, Marlowe Peyton as Lucy and Gabrielle Christian as cashier.

"Thanksgiving III" was written by Tim Hobert and directed by Elliot Hegarty.

"The Middle" is broadcast in 720 Progressive (720P), ABC's selected HDTV format with a 5.1 channel surround sound. A TV parental guideline will be assigned closer to the airdate.

For more information on "The Middle," visit ABC.com/TheMiddle