The Sewer Bomb (E12)

Only months after the D-Day invasion, the desperate Reich answers with a terrifying new weapon – V-2 rockets screaming into London. The stress affects even Churchill's normally unshakeable bodyguard, who spends weeks in a convalescent home. At a conference in Athens, however, the threat comes not from above, but from below, as security forces uncover a ton of explosives secreted near Churchill's hotel. (Prime Video)