Halloween/the Treasure — [s2e5]

In the Season 2 episode of The Amazing World of Gumball titled " Halloween/The Treasure ," the Watterson children turn into ghosts to attend a party with Carrie, while in the second segment, they investigate a mysterious "treasure". The latter reveals a major purchase made by Richard that temporarily improves their finances. You can find these episodes summarized on the Amazing World of Gumball Wiki and listed on IMDb .