Nobody was walking the streets of London at night after that afternoon's riots. and flower sellers usually did their best business early in the evening. So why was Annie Shields out selling flowers at ten o'clock on one of the foggiest nights of the year? And who killed her? it all adds up to the inspector's most baffling case yet. he hasn't a clue how to proceed-but he does have Mrs. Jeffries. And when she and the staff go sniffing around, they're likely to smell more than flowers ...