The teams work to wow the judges with confections that bring the element of surprise.

The teams wax nostalgic with extra-sweet treats inspired by popular candies.

The bakers rush to make winning desserts inspired by the judges' favorite holidays.

Geeky science-themed challenges get the creative juices flowing -- along with oozy zombie 'blood.'

The contestants serve up sweets with summery flavors that evoke the great outdoors.

Fashion-forward challenges force the frazzled contestants to think outside the box.

The baking teams pour buzz-worthy ingredients like coffee, honey and alcohol into amazing edible creations.