Susan Clark plays an excellent murderess in this movie, stifled and controlled by her brother who manages the family business and the money. Her plan to break free of his control and take over the business herself is well worked out and seems foolproof, but one miscalculation leaves her having to improvise her way out one problem after another. Leslie Nielsen, as her lawyer boyfriend, turns in a fine performance, as he plays a sensible, serious role with humour but without the manic quality that has come to be his trademark. Peter Falk's Columbo does a good job worrying and nibbling at the truth, forcing the killer to come up with more lies and explanations, until the contradictions close in on her and she is caught. The viewer finds himself sympathizing with the murderer at the beginning, but her growing confidence and arrogance as she reaps the fruits of her crime succeed in making her downfall a satisfying one.