Rita Ora was shocked as The Masked Singer's Lucky Duck was revealed to be someone very close to her.
The singer is a judge on the US edition of the show, which sees celebrities perform songs in elaborate costumes as the panel guesses who is behind the mask.
During the semi-final, host Nick Cannon was interrupted by Lucky Duck, who announced that their identity would be unveiled after a surprise performance.
Giving the panel clues to their identity, the celebrity said: "As good as I am, this detective-ing thing is only a hobby. I spend most of my time on massive movie sets. Yes, even bigger than The Hangover. There's not an Oscar I don't know."
