Twelve of America's hottest interior designers, artists and architects compete for Top Design. This week they create an inner sanctum for a mystery celeb.

In the second challenge, contestants must design a personalised bedroom. Halfway through, with their sketches and shopping done, they discover a twist.

It's all about R&R as the contestants head for the beach – or so they think. Instead, they face a team challenge to create a luxury resort cabana.

It's time to create a living and work space for a load of discerning design students. And there's another catch too. Contestants must shop at garage sales.

Competitors must transform a garage for an 'All-American family' – two parents, three kids and dog. Who will create the Top Design and who gets sent home?

Party on! The contestants are split into teams of three to design competing party spaces. Who knows how to celebrate in style and who's the party pooper?