An innovation in the annals of Granchester police history is the order for prowl cars with policewoman, and Det. Sgt. Devery takes a while to learn that Rosamund Valentine is a worthwhile companion. They become involved in the theft of drugs, in a housebreaking and rape case, and C.I. Martinean keeps the facts of the matter under control while twins, li narcotics and murder are forerunners to romance. Tidy.