The Voice Crowns a New Champion With a Little Help From Its Friends

The Voice has a history of welcoming big name guest performers, but the show is pulling out all the stops for its landmark twentieth season finale, with Justin Bieber, Maroon 5, OneRepublic, Gwen Stefani, Snoop Dogg and Ben Platt among the stars set to take the stage before the show names its latest winner.

Also today: Wedding bells ring in the This Is Us Season 5 finale, NCIS special agent Gibbs (Mark Harmon) learns that a serial killer may be on his tail, and ABC explores the career of Mike Tyson in a four-hour docuseries. Here’s what’s new and noteworthy on TV this Tuesday:

SEASON FINALE: Five talented musicians wait for their name to be called in The Voice Season 20 finale. Coach Blake Shelton hopes to walk away with another winner in Cam Anthony, but first he’ll have to beat Team Kelly superstar Kenzie Wheeler, a country crooner with powerful vocals. The two-hour live event features duets from the final five contestants and their coaches, along with a star-studded slate of special guests. 8:00 PM ET on NBC

SEASON FINALE: Following tonight's super-sized Voice finale, This Is Us moves to a special time. In the Season 5 finale, the family gathers for Kevin (Justin Hartley) and Madison’s (Caitlin Thompson) wedding, so make sure you have a box of tissues handy. Watch preview. 10:00 PM ET on NBC

SEASON FINALE: CBS tentpole NCIS wraps its eighteenth season with an episode that sees Bishop (Emily Wickersham) implicated in an old NSA leak. Meanwhile, Gibbs (Mark Harmon) and Marcie (Pam Dawber) realize that the serial killer they’ve been hunting may be tracking them, as well. Watch preview. 8:00 PM ET on CBS

DOCUSERIES PREMIERE: ABC News takes a look at Mike Tyson: The Knockout, a two-part docuseries about the boxing legend. Part 1 chronicles the former champion’s youth, his time in juvenile detention, and his rise to fame as the undisputed heavyweight champion in the late 1980s. (The conclusion airs next Tuesday at the same time.) Watch trailer. 8:00 PM ET on ABC

SPECIAL PRESENTATION: Amazon is treating fans to Borat Supplemental Reportings Retrieved From Floor Of Stable Containing Editing Machine, three add-ons to the recently-released Borat Subsequent Moviefilm. The new additions include never-before-seen footage from the sequel, an extended cut of Borat's (Sacha Baron Cohen) lockdown with two conspiracy theorists, and a debunking Q&A with the world's leading experts, including Hillary Clinton. Watch trailer. Streaming on Amazon Prime Video

SEASON PREMIERE: FOX game show Mental Samurai kicks off its second season with a former NFL player, a teacher, an entrepreneur, and a trained knife and sword champion fighter. Rob Lowe hosts. Watch preview. 8:00 PM ET on FOX

SPECIAL PRESENTATION: On the one-year anniversary of George Floyd's kiling, BET is airing Bars and Ballads for George Floyd, the first in a three-night series of specials aimed at addressing systemic racism and injustice in the US. 8:00 PM ET on BET

SPRING PREMIERE: The 7 Little Johnstons experience a holiday hangover in the show's Season 8 spring premiere. In the wake of COVID, Jonah and Anna search for a new place to live, and amid all the drama, Trent and Amber fight to keep their family’s tight-knit dynamic alive. Watch preview. 8:00 PM ET on TLC

SEASON PREMIERE: C.J. (Allen Payne) sets off a crisis in Tyler Perry’s House of Payne Season 8 premiere when the family learns that he ran into a burning building. Watch preview. 9:00 PM ET on BET

NEW EPISODE: Rule 50 of the Olympic Charter takes center stage this month on Real Sports With Bryant Gumbel as Gumbel sits down with former Olympians to discuss the organization's ban on racial, religious and political demonstrations at Olympic sites. 10:00 PM ET on HBO

Claire Spellberg Lustig is the Senior Editor at Primetimer and a scholar of The View. Follow her on Twitter at @c_spellberg.