. . . or linger and be strangled -- which is what happens to the wife of a doctor and then to the woman he had been treating at a time just sufficient to clear him of suspicion. Antony Maitland makes yet another discreet investigation and courtly courtroom appearance in order to establish the pivotal second murder and prevent a third. More substantial than the later comers in this series and pleasant even where it fails to raise a pulse or an eyebrow.