What To Watch: Brilliant Friend Finale, Bull's Hit-And-Run Priest And More

Courtesy of HBO

On TV this Monday: My Brilliant Friend wraps its freshman run, Bull, Magnum and the Legends head for hiatus, and Reba McEntire returns as host of the annual CMA Christmas special. Here are 10 programs to keep on your radar; all times are Eastern:

Showtimes for December 10, 2018

8:00 PM ET

Arrow

The CW

'Elseworlds' crossover (Part 2 of 3): Oliver and Barry head to Gotham with Supergirl to pursue a lead on John Deegan. There, they meet Kate Kane aka Batwoman (Ruby Rose), who provides them with intel that leads to Arkham Asylum. (Concludes Tuesday with Supergirl.)

CMA Country Christmas

ABC

Tony Bennett, Diana Krall, Brett Eldredge, Amy Grant, Martina McBride, Old Dominion, Brad Paisley, Lindsey Stirling and many more perform; Reba McEntire hosts.

The Voice

NBC

The Top 8 vie for a spot in the finale; the artists team up for competitive mash-up duets. (DeAndre Nico Responds to Adam Levine's Dis!)

9:00 PM ET

DC's Legends of Tomorrow

The CW

Fall finale: Charlie and Zari help Constantine after he breaks the cardinal Legend rule and alters the past. (Get scoop on this "crossover" episode.)

Magnum P.I.

CBS

Fall finale: Magnum helps out Rick's crush Toni (The Sopranos' Jamie-Lynn Sigler) after her poker game is robbed by a masked gunman.

My Brilliant Friend

HBO

Season 1 finale: Elena gets kicked out of class for voicing her opinion; Nino encourages Elena to write an article about the experience. (Check renewal status; one of TVLine's Top 10 Dramas of 2018!)

No Sleep 'Til Christmas

Freeform

TV-movie premiere: An engaged event planner (Supergirl‘s Odette Annable) and a bartender (real-life husband Dave Annable) -- both of whom suffer from insomnia -- discover that they can only fall asleep while next to each other [insert eye roll here]; Charles Michael Davies (The Originals) co-stars.

10:00 PM ET

Bull

CBS

Fall finale: Bull agrees to represent a priest who was behind the wheel of a church van in a fatal hit-and-run.

The Great Christmas Light Fight

ABC

Special time: This "All Stars" episode takes a look back at some of the best festive light displays in America… meaning, this is a clip show.

Pentatonix: A Not So Silent Night

NBC

The vocal group’s third holiday special features Kelly Clarkson, The Backstreet Boys, Maren Morris and master illusionists Penn & Teller.