Domino Masters | 9pm | Fox

In the last night before the semifinals, three teams compete in an unbelievable domino toppling and chain reaction tournament with a science theme, featuring guest judge Bill Nye. The teams will be given exciting custom elements to incorporate into their Rube Goldberg-style topples, but the pressure is on as one wrong move could set off a chain reaction that knocks them out of the running. The two teams whose topples come out on top will continue on to the semifinals.