Watch “The Russian Doll” performance of “Shallow” from the new season of The Masked Singer. Also introducing “Cluedle-Doo,” the show’s first-ever clue-meister, a secret celebrity guest who stirs the pot with all-new clues about the contestants’ identities. See the photo.Below is a first look trailer from the fifth season of The Masked Singer. The Masked Singer returns Wednesday, March 10 at 8/7c on Fox. Check it out.