The Queen of Christmas Mariah Carey is joining Drew, who is dressed as the Queen of Halloween, for a special Halloween show celebrating both holidays! Mariah is telling Drew about the 30th anniversary of her iconic hit holiday song, her Halloween and Christmas traditions with her kids and her Vegas residency.

Plus, the Halloween celebration continues with the Drew-crew showing off their decorating skills with a spooky door decorating contest with special tips for the audience. Then, they're sharing the best tips for making festive Halloween snacks that everyone will love.

Drew and Valerie Bertinelli highlight adoptable dogs with a local humane society, hit the headlines with Ross Mathews, and try out Dolly Parton's hack for the ideal baked potato.

Emily Osment and Montana Jordan ("Young Sheldon" spinoff "Georgie and Mandy's First Marriage"); chef Kardea Brown.