Ree makes quick family meals at home on the ranch. There's pork marsala with mushrooms, grilled shrimp panzanella and spinach artichoke calzones.

Four chefs take on Martha Stewart's unique challenges as they attempt to claim the $50,000 prize. First, the chefs must cook with hasty pudding and mussels.

Robert comes to the rescue of Deraney's Two City Tavern in Barnesville, Georgia. Can the owner make amends to his staff and the local community?

Guy plays a tasty game of chicken all over the US. He finds it Nashville hot-style in California and French-style at a pizza-pasta place in Seattle!

Guy digs into a range of flavour fusions, from a Latin-Asian mashup in Chicago with paella and posole to a Hawaiian spot serving guava ribs and tropical pizza.

Atlanta chef Chad Clevenger and Puerto Rican chef Anita Cartagena are ready to battle Bobby. Alex Guarnaschelli and actor Ben Rappaport referee the fight.

Foodies Michael Voltaggio and Laura Vitale join forces to teach Bobby Flay a thing or two. They bring along chef Alex Brugger and Tatiana Rosana to school Bobby!

Valerie Bertinelli and Duff Goldman challenge the young bakers to make zebra cakes with striking interior stripes. Who will be eliminated from the competition?

An Air Force veteran has been struggling to keep his restaurant, The Anchor, afloat. Robert steps in to help the owner manage his anger.

Guy Fieri dives into dishes steeped in tradition. He checks out Russian piroshki in Seattle, and a hidden joint serving Hawaiian food to a Jewish deli in Chicago.

Guy Fieri cruises the states to check out Far-Eastern flavours, from chicken with an Asian spin in Seattle and Thai in Hawaii to modern Korean wings in Chicago.

Iron Chef Michael Symon and actress Brooke Shields band together to take Bobby Flay down. Italian chef Carla Pellegrino and Atlanta's Idris Muhammad judge.

The final four chefs battle over three rounds utilising smoke, an outdoor oven, and the fire dome to win $100,000 and be crowned the champion.

Four chefs cook Thai-inspired meals, starting with chicken feet in the first basket. A colourful entrée basket includes some pretty purple dumplings.

The eight remaining chefs must work in teams to survive the fifth shift. Judges Brooke Williamson and Ayesha Nurdjaja will send two chefs home.

Valerie and Duff challenge the bakers to make cosmic cupcake pull-aparts. They must be decorated to look like the sun, a rocket, Saturn, a comet, or the moon.

Molly Yeh's makes an Italian feast for the family. It includes smashed meatball burgers, an antipasto salad, crispy parmesan friend onion, and spumoni cake jars.

Molly Yeh celebrates her wedding anniversary with an epic dinner! It includes a juicy T-bone steak, scalloped potatoes, and a marzipan moose mousse cake.

Ree has four speedy suppers for ideal weeknight meals. She makes Cajun surf and turf pasta, pineapple chicken stir-fry and a quick corn quesadilla.

Ree Drummond shares tailgate-friendly favourites for game day. She makes portable Italian pork sandwiches, and easy slow-cooker teriyaki ribs.

Martha Stewart shocks the four chefs in the tournament when she reveals that she plans to make them switch stations - and dishes - at any time!

Robert tries to save Grille No. 13 in Waldorf, Maryland. The owner is $350,000 in debt and has no time to spend with her infant daughter.

Esther Choi teaches how to make two types of kimchi and shares kimchi recipes, including kimchi fried rice and Korean pork belly wraps.

Buddy and the crew create a giant taco cake for National Taco Day. And, an artistic 9-year old's designs are included in her alien birthday cake.

Selena Gomez feels the pressure at Alta, Keith Corbin's California restaurant. Later, she makes a fried fish dish for Atla's toughest critic.

Selena Gomez tries the best Texas BBQ in Los Angeles at Moo's Craft Barbecue. Then, Selena puts her own spin on their meat-centric menu.

Valerie and Duff challenge the bakers to make cosmic cupcake pull-aparts. They must be decorated to look like the sun, a rocket, Saturn, a comet, or the moon.

Andrew Zimmern is in Genoa, Italy. The stunning city offers an incredible variety of traditional cuisine - Pesto pasta, seafood salad and decadent flatbread.

Andrew Zimmern explores the Emilia-Romagna, Italy. He samples some culinary classics from Bologna like mortadella sausage, Parmigiano Reggiano and tortellini.

Robert comes to the rescue of Z Fish House in Loudon, Tennessee. Can he help the struggling owner rediscover his passion and lead his staff?

Esther Choi teaches how to make two types of kimchi and shares kimchi recipes, including kimchi fried rice and Korean pork belly wraps.

Buddy and the crew create a giant taco cake for National Taco Day. And, an artistic 9-year old's designs are included in her alien birthday cake.

Selena Gomez feels the pressure at Alta, Keith Corbin's California restaurant. Later, she makes a fried fish dish for Atla's toughest critic.

Selena Gomez tries the best Texas BBQ in Los Angeles at Moo's Craft Barbecue. Then, Selena puts her own spin on their meat-centric menu.

The reigning champ faces Torrece "Chef T" Gregoire and Joe Flamm as the chefs tackle fan-favourite flavors in a high-stakes culinary showdown.