Cap solves the mystery of Cardiff Manor and a "ghost" dog, used by the only living relative of the family that once owned the manor.; An avowed 5th Columnist uses a city celebration to lure Cap and Bucky to it, so that he can convince the good Captain to join his organization...or die!; Cap and Bucky face the unparalled fury of a female Nazi agent, bent on capturing America's only model of the new rapid fire grenade gun for Hitler.; An unscrupulous construction company owner seeks to put his competition out of business, but not legitimately!; Father Time, puzzled by the fact that many noted people are being murdered with a clock at the scene mysteriously stopping at the exact moment of death, seeks to solve the mystery against a strange Yogi who predicted those deaths.; A Nazi agent, posing as a newspaper reporter, to prevent Headline from getting an exclusive story from a man who had just visited Moscow.