Adventures in Diplomacy

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Two foreign spies are commissioned by their government to secure at all costs a secret treaty which is in the possession of the Ambassador of Venezuela. The treaty involves the affairs of Venezuela and Mexico. Rosa Morini and her brother, the Prince, leave their native land equipped to secure the paper in question. A complicated plot is laid out by the two and arrangements are made by the spies whereby if their escape is cut off, the embassy is to be blown up. This is to be done by means of a secret mechanical contrivance concealed in their rooms and operated by a confrere of theirs, who is an expert in analytical chemistry. The government secret service bureau becomes aware of the spies' presence by the receipt of a cipher message from Barcelona, giving a description of the plotters, and the case is turned over to Grimm, the head detective of the organization. Rosa and her brother, through Count de Rosini, are invited to the Embassy Ball. During the supper Rosa feigns a swoon and as the Mexican Ambassador carries her into another room, her brother attacks him. The Prince fails to find the paper but discovers the combination to the safe, and they both escape. The next night Rosa, disguised as a boy, enters the Ambassador's house and, evading the guard, goes to the safe. To allay suspicion, she throws bags of money out of the window to show robbery as the motive. Impatient at the long wait, the Prince, who is at the window, goes away and leaves her to her fate. She is trapped in the room and deserted by her brother. She breaks down and confesses all to Grimm, who has been summoned. Meanwhile the Prince changes places with the Ambassador's chauffeur and drives the officials to the den. At pistol point he tries to force the secret from him. Rosa returns, and to allay her brother's suspicion shows him money. While they are talking the detective enters and seizes the Prince. Wild with disappointment he attempts to kill his sister. The chemist, pressing a button, explodes a bomb, which renders the Prince unconscious. He is led to a cell while the girl is taken under the wing of Grimm and her foot placed in the path which leads to good and love.