Pearl, Boogie Woogie, Mad Scientist and Coral, all nicknames for the costumes the celebrities don for their performances, duked it out in one final showdown − the winner nabbing the Golden Mask trophy and being forced to reveal themselves.

In the final moments of the show, Pearl took off her mask and revealed herself as country singer Gretchen Wilson. Robin Thicke, one of the four celebrity judges on the show, was the only one of his colleagues to guess Pearl's identity.

Details follow for Season 13, Episode 13 of “The Masked Singer,” “Lucky Season 13 Finale,” which aired May 7 on Fox. It wasn’t that long ago that country singer Gretchen Wilson was immobile, having shattered her left leg,