The inspector Staniland as always try to put himself in the place of the victim, this time an unsuccessful pianist. That s when the victim s mistress Barbara entered the appartment, look like a real bitch that one think the inspector. Surprised by his presence, she accuse herself of the crime. But the inspector is not convinced because everything don t fit all well in her confession and specially the tone she use to do so. In his investigation, Staniland has fisted trouble with a man who s protecting Barbara. Supposed to be her brother, isn t he? And can you refused a girl like her even if you re a policeman.