Black Lightning joins the Arrowverse in the third hour of Crisis On Infinite Earths

Cress Williams Photo: Katie Yu
Here’s what’s happening in the world of television for Tuesday, December 10. All times are Eastern.
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The Flash, “Crisis On Infinite Earths: Part Three” (The CW, 8 p.m.): The madness continues—and tonight’s the last of it you’ll get until January, so enjoy it while it lasts. The big news in the third installment of Crisis On Infinite Earths is the appearance of Black Lightning of Black Lightning fame (Cress Williams), brought into this big universe-destroying chaos by Pariah (Tom Cavanagh).