‘Countdown’ Review: Prime Video’s Fledgling Cop Drama Might Spark an Existential Crisis

During many times watching “Countdown,” I reminded myself that I liked TV. “It’s a good medium with lots of good shows,” I kept saying to the heavens. “It’s not all like this.”

“Countdown” doesn’t have a lot of power. But it did have the power to give this TV critic — this TV watcher, this TV fan — an existential crisis, a feeling of overwhelming doom. I guess that’s something!

“Countdown” begins with a Homeland Security agent getting killed in broad daylight, sparking FBI Special Agent Nathan Blythe (Eric Dane...