Spoiler alert: Who died on Desperate Housewives?

After weeks of anticipation, "Desperate Housewives" fans finally learned which major character died after a Wisteria Lane plane crash: Karl Mayer. Orson ended up paralyzed.

Sunday's episode focused on a "what if" theme that placed the main characters in hypothetical scenarios.

Before learning Karl's fate, his ex-wife Susan imagined what would have happened if she stayed with him amid his transgressions. The result? Teri Hatcher in a fat suit. That's right: Susan learned she would have eaten her emotions if she stayed with Karl. To make matters worse, Karl eventually left her -- while Mike Delfino found a happy family elsewhere.

Bree, who'd been having an affair with Karl, wondered what her life would have been like if she and Karl had gotten married. Answer: not pretty. In the dream sequence, Karl went back to his playboy ways -- cheating on wife Bree. The pair broke up, and later Bree was the emergency contact person after ex-husband Orson died. She went to his lonely apartment and found photos of them together. His landlord told Bree that Orson died of a broken heart.

Fortunately, outside of hypothetical world, Bree now has a chance to make things right with Orson. She learned he survived the plane crash -- but was paralyzed.

Next up: the newest Wisteria Lane resident, Angie Bolen. In the first half of the plane crash episode, some details of the Bolen family's sketchy past came to light when they faced the possibility of being blackmailed by Mona Clark. Sunday night, Angie imagined how things would be if she turned herself in. She faced a life in prison.

Fortunately, Angie didn't have to worry too much. A nurse informed her Mona didn't pull through. But we didn't see Mona's dead body, leading some fans to speculate she's actually alive.

Then, the most boring scenario of the bunch: Gaby imagined what her life would be like if daughter Celia (injured in the plane crash) became an actress. Fans who didn't who didn't hit the fridge during this portion of the show saw Gaby as a controlling stage mom. Luckily, it was all a dream and she learned Celia is perfect without Hollywood's attention. Aww.

Lynette, finally, learned one of the twins with whom she's pregnant was having medical difficulties. While the doctors operated, she imagined what it would be like to have a disabled child. The scenario started as a struggle, but culminated with a son who overcame obstacles to achieve greatness.

Unfortunately, when Lynette woke up, she learned one of her babies had died during the operation. The other one is fine, though. While Lynette grieved, we got one of the most touching moments of the night: Gaby consoled her and finally thanked her for saving Celia in the plane crash.

Weigh in: What did you think of Sunday's episode? Do you wish Orson would have died instead of Karl? And what about Mona -- any chance she's still alive?

This story was originally published January 3, 2010 at 9:44 PM with the headline "Spoiler alert: Who died on Desperate Housewives?."