13 episodes
First episode: E1

Every second counts.
When an officer with the Department of Homeland Security is murdered in broad daylight, LAPD detective Mark Meachum is recruited to a secret task force, alongside undercover agents from all branches of law enforcement, to investigate. But the hunt for the killer soon uncovers a plot far more sinister than anyone could have imagined, kicking off a race against time to save a city of millions.
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13 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Countdown first aired on June 25, 2025.
Countdown currently has 1 season and 13 episodes.
Countdown is canceled, and no upcoming episode is currently scheduled.