A federal agent goes to work for a taxi company believing it to be a front for a gang of counterfeiters. A federal agent goes to work for a taxi company believing it to be a front for a gang of counterfeiters. A federal agent goes to work for a taxi company believing it to be a front for a gang of counterfeiters. A federal agent goes to work for a taxi company believing it to be a front for a gang of counterfeiters.