Two dancers are eliminated; Jessie J. performs.

After twenty days, exhaustion is setting in. For Joe LaFont, weariness is only half the battle. On a day when he needs to keep momentum rolling, his stepson Tommy's a no show. As he tackles the job alone, his luck turns from bad to worse. Weather is coming off the Gulf, and Joe will need to muster the resolve to face every obstacle the swamp has to offer. Troy Landry is focused on keeping morale and production high, but his crew is showing signs of fatigue. Jacob shows up late, and on the water, Liz is ready for some lively debate. Bruce and Nick turn to a new territory, hopeful it will provide a surge of big gators late in the season. They're after one gator in particular - nicknamed Lucifer - who dwells in an area known in Cajun lore as The Devil's Swamp. R.J. and Jay Paul are also turning to a new territory to avoid a slump. They are hunting the 3000-mile Intracoastal Waterway. It's an area known for big gators... but, it's also overrun with boat traffic.

Judd talks Colleen into trying some of the treats he purchased at a medical marijuana store and just when the two are really enjoying their lazy Sunday "fun day", they realize they are late for a family Christening. Meanwhile, Annie's niece Christy is a cool, confident high school senior.

Ryan Reynolds, Simon Pegg, Kyle Kinane

Samuel L. Jackson, Texas Ranger Josh Hamilton, Jennifer Hudson

Larry David, Pitbull with Ne-Yo

The final 14 contestants attend MasterClass to learn the fine art of spotted dick with custard. Later, three lucky contestants have a private MasterClass with James Privett.

Alex meets Mason's parents. Max accidentally changes his parents into 4-year-olds.

New team captain Jon Richardson joins Jimmy Carr and Sean Lock in the new series. With guests Alex Reid, Russell Kane, Rachel Riley (from Countdown) and comedian Josh Widdicombe.

Graham is joined by Hollywood actress Cameron Diaz, starring in new movie Bad Teacher; and top American comedienne Kathy Griffin.