Jason referred to as Glauce), a daughter of the King of Corinth, to strengthen his political ties. When Medea confronted Jason about the engagement and cited all the help she had given him, he retorted that it was not she that he should thank, but Aphrodite who made Medea fall in love with him. Infuriated with Jason for breaking his vow that he would be hers forever, Medea took her revenge by presenting to Creusa a cursed dress, as a wedding gift, that stuck to her body and burned her to death as soon as she put it on. Creusa's father,
The Wedding Day Mystery then a series of mishaps follow. One of the brides is frightened when she sees a ghost – or rather, someone dressed as a ghost – in her closet. Nancy's car is also tampered with, which nearly kills her. The bride's wedding gifts are stolen, and the wedding dress of the bride of the next wedding is slashed to rags. In the end, the saboteur turns out to be Grace Sayer, the previous owner of the house. She had lost the house due to debts and intended to regain it by frightening all its inhabitants. But after she is caught