Mario Cardoza was a professional killer. He was one of the most wanted criminals in five countries. According to Lucy Becker, he had killed 200 to 300 people, and several Immortals. In 1952 Warsaw, Cardoza hired Amanda to steal a vase for him from a conference room, replacing it with a duplicate. He, however, was not interested in the vase, but he had placed a bomb in the duplicate without informing Amanda. For Amanda it was an easy job to exchange the vases. As he had planned, the bomb exploded during a conference.