Nailed It! — Season 4

Two bookish treats inspired by literature set the bakers up for epic fails: Shakespearean stained-glass window cookies and a pop-up "Moby Dick" cake. 

Edible ice cream boom boxes made with liquid nitrogen and a fresh and fly fondant-covered cake? Oh, snap — that sounds like a '90s challenge. 

Terror awaits the contestants as they take on two technically demanding desserts: chocolate eggs and a layered sphinx cake, both full of surprises. 

The bakers go for the gold — and miss masterfully — with sports-medal cookies and an elaborate swim cake that's topped with a waffle cone torch. 

Jam-filled animal pastries and a coffeecake shaped like a sloth push the contestants out of their comfort zones — and the results are wild. 

A Western-themed round inspires deep-fried cowboy-duck doughnuts, a root beer-infused rodeo cake ... and really bad flavors. 

From self-frosting bubbling beakers to record-breaking rockets, these science-inspired sweets ask the impossible — and invite kids into the kitchen. 

The bakers commit to re-creating wedding day desserts, including wedding band mini-cakes and a Vegas-themed masterpiece with moving parts.