 When they arrive late back to Coco's apartment, the Baron is jealous, but soon realizes Topaze is entirely innocent.Unaware that the water, "Sparkling Topaze," which is being sold all over Paris, does not contain the medicinal formula he invented for it, Topaze is shocked when Dr.Bomb (who had turned down the "honor" of having the fraudulent water named for him) shows up, demanding 100,000 francs from the Baron or he will expose the fraudulent product.