What’s On Tonight: ‘Brooklyn Nine-Nine’ Returns, ‘NCIS’ Crossover, And ‘Shannara Chronicles’ Premieres

Chicago Fire (NBC, 9 p.m.) – By now, these Chicago crossovers are old news, but they keep the ratings monster alive over at the “Peacock Network,” so expect more of them this year. Chicago Fire kicks things off after an attack on someone at the station forces the squad to work with the Chicago Med and Chicago P.D. teams to find a missing firefighter and discover the motive behind the assault.

Chicago Med (NBC, 10 p.m.) – The doctors work to save the life of a member of Firehouse 51 while helping the Chicago P.D. team investigate a woman pulled from a fire.

NCIS (CBS, 8 p.m.) – CBS is taking a page out of NBC’s book with tonight’s crossover event between NCIS and its sister show, NCIS: New Orleans. First up, Abby’s brother – who’s apparently a chef who caters to passengers on private planes – is suspected of poisoning a few diners on a flight from New Orleans to Washington, D.C.

NCIS: New Orleans (CBS, 9 p.m.) – The New Orleans team picks up the poisoned plane case by investigating a Russian sleeper agent who may have ties to Abby’s brother.

New Girl (Fox, 8 p.m.) – If, like us, you’ve completely forgotten what’s going on in the loft, here’s a bit of a refresher: Cece and Schmidt are getting married. That’s pretty much all you need to know for tonight’s season five premiere, which sees Jess and Nick taking on maid-of-honor and best man duties and royally screwing things up, as expected.

Finding Your Roots with Henry Louis Gates Jr. (PBS, 8 p.m.) – Modern Family’s Ty Burrell discovers some surprising family secrets during the season three premiere.

Hollywood Game Night (NBC, 8 p.m.) – Justin Long, Kevin Smith, Tony Hale, Helen Hunt and a handful of other celebs join Jane Lynch to help kick off the season four premiere. Plenty of booze and embarrassment await.

Grandfathered (Fox, 8:30 p.m.) – Gerald and Vanessa worry over their baby’s upcoming surgery, while Sara and Gerald plot to trap Jimmy into going to the doctor for the first time in 10 years.

Brooklyn Nine-Nine (Fox, 9 p.m.) – Amy asks Terry for a letter of recommendation, while Charles and Genevieve contemplate taking their relationship to the next level (after finding a way to deal with his nagging ex-wife).

Shark Tank (ABC, 9 p.m.) – A Secret Service agent has a solution for the dreaded “crinkled tie” problem that can affect even the manliest of men, while ideas for a heavy-equipment adventure company and a protein-filled pancake mix are pitched to the sharks.

Teen Wolf  (MTV, 9 p.m.) – The season five winter premiere sees the bromance of Scott and Stiles restored (kind of) so that the two can discover the cause of the sheriff’s infection before it does him in.

The Grinder (Fox, 9:30 p.m.) – Stewart gets his chance at fame, but his 15 minutes are ruined by Dean who, besides stealing his brother’s spotlight, is also busy thwarting Timothy Olyphant’s attempts to romance Claire.

Limitless (CBS, 10 p.m.) – Bradley Cooper’s baby blues are back and in danger as Senator Edward Morra finds himself the target of an assassination plot that forces Brian to sabotage an FBI investigation in order to protect the senator’s NZT secret.

The Expanse (Syfy, 10 p.m.) – Holden and his crew partner up with an unlikely ally while Miller’s obsession with the Julie Mao case grows.

The Shannara Chronicles (MTV, 10 p.m.) – This new fantasy-driven drama based off a series of books by author Terry Brooks is set thousands of years after the fall of humankind, and follows an unlikely trio of heroes who must fight to protect their magical world from a dangerous evil. Think Lord of the Rings meets Game of Thrones, teen edition.

LATE NIGHT GUESTS:

Jimmy Kimmel Live!: Natalie Dormer

The Tonight Show Starring Jimmy Fallon: Kristen Stewart and Michael Shannon

The Late Show with Stephen Colbert: John Krasinski

Late Night with Seth Meyers: Samuel L. Jackson

The Late Show with James Corden: Sarah Hyland

Conan: Quentin Tarantino