What to Watch on Monday: A new Christmas movie, CMA Country Christmas and Pentatonix

No Sleep ‘Till Christmas (9 p.m., Freeform) - In this new movie, an engaged woman and a bartender — both insomniacs — meet near the holidays and discover they can only fall asleep when they are next to each other. It stars Dave Annable and his real-life wife Odette.

CMA Country Christmas (8 p.m., ABC) - Country music stars perform Christmas classics and festive collaborations. Reba McEntire hosts and performs.

Holiday Baking Championship (9 p.m., Food) - In the pre-heat, bakers have to combine common pantry ingredients like balsamic vinegar, potato chips, oatmeal, red wine and olive oil in a new version of a classic holiday dessert. Later, the bakers must use two key fruitcake components in a new dessert.

Mars (9 p.m., National Geographic) - Lukrum strikes a deal with Russia for exclusive mining rights, and the first-generation Martian baby arrives two months early.

Pentatonix: A Not So Silent Night (10 p.m., NBC) - A one-hour holiday special featuring a variety of heartwarming a cappella performances with celebrity guests.

Who Do You Think You Are? (10 p.m., TLC) - Josh Duhamel travels to England to investigate the extraordinary life of his 12 times great-grandfather and uncovers an astonishing, dark twist of interrogation and torture that rocks his belief system to the core.

The Great Christmas Light Fight (10 p.m., ABC) - A new episode featuring over-the-top Christmas displays.

Christmas Cookie Challenge (10 p.m., Food) - The five cookie makers must imagine what Christmas Eve looks like for Mrs. Claus.