The demanding maths and memory rounds are first up, but these kids don't seem daunted, they've been preparing for this for years.
That's definitely true for 11-year old Christopher whose dad, Simon, has been training his son for three years for this show. But 12-year old Mog has entered himself in order to prove pushy parents aren't necessary to win.
Familiar face, Hayley, also returns to the competition two years after her eldest child, Curtis took part, and now she's hoping her daughter Sophia, who's 11, can win.
Child Genius, C4, 8pm
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