In the final showdown of the season, the Blasko, Slankard, Buchanan and Clinkscales families share their versions of winter wonderlands with judge Taniya Nayak in hopes of winning the $50,000 grand prize and Light Fight trophy.

Who is the merriest and brightest of all? In this festive holiday decor competition, Carter Oosterhouse judges displays created by the Wright, Mach, Artz and MacGregor family, all vying for the $50,000 grand prize and Light Fight trophy.

The holly jolly celebration continues as the Richards, Kraklow, Clark and Bell families face off in competition for the most spectacular holiday displays in hopes of earning the $50,000 grand prize and Light Fight trophy, as Carter Oosterhouse judges.

The tree-mendous Christmas decor competition heats up as the Laakso, McCarty-Williams, Hetherington and Kittell families put their creative skills to the test to win the $50,000 grand prize and Light Fight trophy, with Taniya Nayak judging.

Judge Taniya Nayak continues the holiday festivities as the Masone, Cook, Rezendes and Joules-Cornetti families battle for the $50,000 grand prize and Light Fight trophy on an all-new episode of "The Great Christmas Light Fight."

It's beginning to look a lot like Christmas in the season 12 premiere! The Campbell, Connors, Foy and Hughes families compete for the $50,000 grand prize and coveted Light Fight trophy as Carter Oosterhouse judges these over-the-top displays.