Inspector Maigret is in court indeed--fretfully winding up the case against Gaston Meurant, a shy, quiet framemaker whom Maigret believes innocent of the charge against him: the murders of both his rich, ex-brothel-keeper aunt and the four-year-old girl in her charge. As the case progresses, however, the tide turns in Meurant's favor, thanks to surprising evidence of his amoral wife Ginette's vain, shallow, myriad infidelities. And then, after Meurant's acquittal, the shocked innocent-man goes to seek revenge on Ginette's most frequent adultery-partner--with Maigret's men monitoring his every move. . . and nabbing the real murderer. No surprises here, but a concise, economical narrative in an ambience of gentle melancholy: Simenon in good form, circa 1959.