当一个老朋友拜访海伦时，一个新的美人鱼出现了，瑞恩对他们的动机提出了质疑；玛迪知道了伊恩死后的真相；本为他母亲的治疗而战；桑德被激励承担更多的责任。
As an old friend visits 当一个老朋友拜访海伦时，一个新的美人鱼出现了，瑞恩对他们的动机提出了质疑；玛迪知道了伊恩死后的真相；本为他母亲的治疗而战；桑德被激励承担更多的责任。
As an old friend visits Helen, a new mermaid arrives leaving Ryn questioning their motives; Maddie learns the truth behind Ian's death; Ben fights for his mother's treatments; Xander is inspired to take on more responsibility.详情
