A group of moms, called "mombies" get zombified and host a Halloween flash mob to Michael Jackson's "Thriller" each year. Since 2016, the group has almost doubled in size, with weeks of rehearsals, two different shows and a purpose: to raise money for breast cancer. Tony Dokoupil has the story.

Original source: https://www.cbsnews.com/video/group-mombies-host-thriller-flash-mob-purpose-raise-money-breast-cancer/