TV HIGHLIGHTS

Quantico, 8 PM on Ch. 22 and Ch. 9:

The third-season finale of this adventuredrama — “Who Are You?” — also spells the end for the show as a whole, and possibly for some characters as they complete a mission in Ireland. The series has made Priyanka Chopra even more of a star beyond her Bollywood roots, with her role as espionage agent Alex Parrish adding to her overall bankability (demonstrated in part by her presence in the “Baywatch” movie). Jake McLaughlin, Johanna Braddy, Marlee Matlin and Blair Underwood also bid farewell to their “Quantico” alter egos here.

Brandi Carlile in Concert — A Bluegrass Underground Special, 10 PM on Ch. 48; 11 PM on Ch. 16; 2 AM on Ch. 16 and Ch. 48:

The folk-rock musician offers a variety of tunes — many of them, such as “The Joke,” drawn from her album “By the Way, I Forgive You” (released earlier this year) — in this new special. Carlile’s tune “The Story,” which she also performs here, put her on the map with many listeners who became fans. A big part of her own story is that she is self-taught as a musical force, not only as a singer-songwriter but also as a piano and guitar player.

David Tutera’s CELEBrations, 10 PM on WE; 2 AM on WE:

Celebrity party planner David Tutera returns to continue his third season with new episodes, starting with a daunting commission from actress Vivica A. Fox: She wants David to plan a glamorous but fun bash that will celebrate her birthday and her new home, as well as providing a launch for her lingerie line — all in a single event. David hardly has started exploring venue options when his client drops another bombshell: She wants the party to take place at her (smallish) house.