Katherine is stabbed and points to Mike as the assailant. Susan tries to get Katherine to admit that he's innocent, despite the evidence against him. When that doesn't work, she uses the family card.

The Scavo's are in deep money trouble, which is a touchy topic between Lynette and Gaby, given the lawsuit.

Meanwhile, Karl goes against Bree's wishes and buys a flying banner, which he'll use to propose to her. An extortion attempt is followed by rumors that someone on Wisteria Lane is a murderer. Something goes horribly wrong with the plane and it crashes -- killing someone off the show.

Watch this entire episode of 'Desperate Housewives' after the jump.

(S06E10) "Your mom needs help, and so does Mike." - Susan to Dylan

There we go, dear TV Squad readers, a few of our wishes and theories concerning Desperate Housewives have come true this week in the Christmas-themed installment of the show. I mentioned a few weeks back that I wanted Dylan, Katherine's daughter, to come back to Wisteria Lane and help her mother, and it came true. And two weeks ago, a few of you predicted the accurate turn of events concerning Katherine's stabbing.

But Katherine's crazy storyline wasn't the important event of the last episode of 2009. As teased for weeks, the lives of the Wisteria Lane citizens were rocked by a boom and a crunch.