Citadel has arrived on Amazon Prime Video – you can find episode details below.Executive produced by the Russo Brothers, Citadel tells the story of two secret agents (-(played by Madden and Chopra) who, after having their memory wiped by, must find a way to remember their past and fight against a powerful crime syndicate.The official synopsis for the series reads: “The global spy agency Citadel has fallen and the memory of its agents has been erased. Now, the powerful Manticore crime syndicate is filling the power vacuum.