Gregson Grant worked in a Dirkreich Pharmaceuticals, owned by Frederick Dirkreich, and was aware of the illegal activities the company was doing. Being a good man he went to police with the information, but he soon became ill. Police suspected that all the witnesses were infected with something intentionally to silence them. Soon after Gregson fell ill, his daughter Greer Grant - Tigra was notified and she came to see him. Four men also had come about the same time she did, to kill him, Tigra having been spent some years as an Avenger stopped those men. She then went out to search for the cure. While she was gone, Gregson's condition worsened, and he was brought to a hospital. Fortunately Tigra succeeded in her quest to obtain an antidote and Gregson was cured; she also took care of those responsible for his illness.