Whatever happened to goblins and ghosts?

Here's Heidi Brewer King and her husband, Sam. Heidi is Kathleen Rolfsrud's only niece. She's a dietician and general big wig at a hospital in Durango CO. Sam is an energy executive who plays ice hockey with other grown men. We're very proud of both of them. Now. It is Halloween and they're invited to a costume party. Can you guess what they are dressed as? Comment below. You can click to enlarge, but it won't help. Free trick-or-treat candy to anyone who gets it right.