In 1980, Hill became an FBI informant, and his testimony helped secure 50 convictions, including those of mob capo (captain) Paul Vario and James Burke on multiple charges.
1980年，希爾成為聯邦調查局（FBI）的一名舉報人，他的證詞有助於確定50項定罪，包括對黑幫老大保羅·瓦里奧（英语：Paul Vario）和詹姆斯·柏克（英语：James Burke (gangster)）的多項指控。