TV tonight: 'Brooklyn Nine-Nine,' 'Genius' premiere

Brooklyn Nine-Nine
Fox, 8 ET/PT

Could this be the end of the little Nine-Nine? Maybe, considering how badly the squad did on its audit, but not yet. First, Jake and Charles have a case to solve — perhaps their last as partners, which is likely to give us Charles at his most inappropriately emotional. And just to show how everyone is pulling together in the face of crisis, Rosa is determined to boost Terry’s ego when he finds out he isn’t in the lead for “Mr. Nine-Nine.” Which is not a beauty contest, even though it sounds like one.

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The Flash
CW, 8 ET/PT

Oh that Barry. Never mind that his time-traveling keeps causing problems: Barry just can’t help meddling in the past and future. So this week he’s off to the year 2024, in hopes of discovering Savitar’s identity and saving Iris. What he finds in this outing, directed by co-star Tom Cavanagh, is how badly Iris’s death affected her friends and family, changing all of them in ways Barry must now fix.

Genius
National Geographic,  9 ET/PT

NatGeo offers its first ongoing scripted series, which this season is a 10-part biography of Albert Einstein. Produced by Brian Grazer, Gigi Pritzker and Ron Howard — who directs Tuesday’s first episode — the series stars Geoffrey Rush, Johnny Flynn and Emily Watson.