"There was an exaggerated humility about her. And yet he sensed, beneath that image, glints of pride held firmly in check. She was anaemic. Her flat chest was not formed to rouse desire. Nevertheless, she was strangely appealing, perhaps because she seemed troubled, despondent, sickly." In the coastal town of Concarneau, a local wine merchant is shot. Maigret soon realizes that Emma, a downtrodden waitress, is hiding something and that the mysterious yellow dog lurking around town may be..