Harrison Craig, with the aid of a woman who has lost her husband through the sinking of a ship, uses her wiles on a member of Saxonia's royal family and obtains valuable drawings. The Prince and his lieutenant plot to demolish the block house in which Craig is a prisoner, but one of the artillery shots frees his bounds and he escapes.

"See the tricks,schemes, plots and counter plots used in capturing spies. See how one man through his sheer cleverness routed the bloodthirsty foe."