Aston Merrygold and J.B. Gill will take on the challenge of answering seven questions in order to win a fortune for the JLS Foundation in conjunction with Cancer Research UK.
Will they walk away with the full £1 million? Can they make it to the final question? If they do, they'll get the chance to double whatever they've won so far by answering one last question.
But if they get it wrong, they'll walk away with nothing.
Just how brainy are the JLS boys? We'll find out tonight…
The Million Pound Drop Live, C4, 9pm
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