According to the search results, Peter Pettigrew, also known as Wormtail, was strangled to death by his own silver hand in the cellar of Malfoy Manor. This happened when Harry reminded him that he owed him a life debt, incurred when Harry had prevented Lupin and Sirius from executing Pettigrew in the Shrieking Shack four years earlier. Pettigrew hesitated, and the silver hand, sensing this, turned on Wormtail and strangled him, despite Harrys best efforts to save him. This event allowed Ron and Harry to ascend to the main floor of Malfoy Manor to rescue Hermione. The movies did not show Wormtails redemption and death in the same way as the books, and his eventual fate is not specified.