TV top picks

7 p.m. on NBC Blindspot As the team makes a united effort to take down a formidable foe, Jane and Weller (Jaimie Alexander, Sullivan Stapleton) confront a poisonous secret that threatens to rip them apart in the fall finale, “City Folks Under Wraps.” Don’t be surprised if it all ends in one of this show’s memorable cliffhangers. 7 p.m. on CBS I Love Lucy Christmas Special Fans of this annual yuletide special will recognize the flashback-heavy “The Christmas Episode” as one of the two featured colorized halfhours, since it has been a part of each year’s edition to date. New for the 2017 special is “The Fashion Show,” which finds Lucy Ricardo (Lucille Ball) blowing an outlandish amount of money on a dress to attend that title even. 8:01 p.m. on CBS The Dick Van Dyke Show — Now in Living Color! For this year’s edition of this holiday special, series creator Carl Reiner selected two episodes spotlighting Laura Petrie (Mary Tyler Moore, pictured) as a tribute to the beloved actress, who died last January. The first colorized half-hour is “My Blonde-Haired Brunette,” which finds Laura trying to spice up her marriage to hubby Rob (Dick Van Dyke) by going blonde. Then, in “October Eve,” Laura is horrified a painting she once posed for has been turned into a nude portrait by the artist. 9 p.m. on PBS Christmas at Belmont 2017 Nearly 700 musicians and other performers join Grammy-winning host Sheryl Crow for this new holiday concert that was recorded in Nashville’s Schermerhorn Symphony Center. Belmont Chorale, University Orchestra, Jazzmin, Bluegrass Ensemble and Jazz Band 1 are among the groups performing a diverse selection of seasonal music. 10 p.m. on PBS Eric Idle’s The Entire Universe It’s staggering to consider what Monty Python alum Eric Idle would attempt if he were given 90 minutes instead of the hour he’s allotted here for this new special, which is a giddy blend of musical comedy, science and variety. The program was filmed before a live audience.