The Mating Flower: A botanical murder mystery

This is a story of a plant described on Cherokee legend.. Only a princess can smell the flower, but if a man and a woman are exposed to the essence, the man falls deeply in love. Three scientists are recruited by a representative of the Defense Advanced Research Projects Agency to produce and develop the extract for interrogation. A prisoner would be exposed to the smell in the presence of a female agent, and would subsequently be unable to refuse her anything. The three scientists have various adventures, save a woman about to be convicted of a murder she didn't commit, etc.