What happened to Zack from desperate housewives?

Answer 1

In "The Pain in the Heart," the final episode of Season 3, Zack receives third-degree burns and massive tissue damage (the cartilage on his left hand was destroyed, among other things) on both hands after an explosion in the lab. It is later revealed he was working as the apprentice of The Gormogon, and the explosion was designed as a distraction so the Gormogon could break into the lab and steal a skeleton. Zack's weaker personality was manipulated by the Gormogon (whom he referred to as "the Master") so completely Zack believed his belief system irrefutable, even going so far as to kill a lobbyist and dividing his bones among the Jeffersonian's storage units. However, Zack still maintained a loyalty to his friends, willing to injure himself to keep Hodgins safe, and giving up the location of Gormogon's house.

Answer 2

He inherited millions from his Grandfather.

Then he isn't mentioned. How lovely. :P If you look carefully, a lot of things like this are just dropped along the way.

Answer 3

Cody_Kaschplays Zach Young.