"Citadel" has the feel of an old-fashioned spy show, dressed up with sleek leads ("Game of Thrones'" Richard Madden and "Quantico's" Priyanka Chopra Jonas) and state-of-the-art action. The time-bending plot certainly won't earn many points for originality, but it's the kind of meat-and-potatoes series that should find an attentive audience on Amazon, which has already tapped into a similar vein with "Jack Ryan" and "Reacher."

'Citadel' dresses up an old-fashioned spy yarn with state-of-the-art action | CNN

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