Roger Lococco in effect signs his own death warrant by testifying to a Senate committee about a cabal within the U.S. intelligence community, but to back him up he needs Vinnie to testify as an O.C.B. operative — testimony that would end Vinnie’s career as an undercover agent.

In the aftermath of economist Valenti's assassination, new paths open in Vinnie's investigation of the plot to disrupt the Japanese economy. Although Vinnie strongly suspects that Masters is behind the plot, he follows the trail Masters sets out for him. Vinnie and Kate both go to Utah to track down the mysterious Mr. Wilson. (source: http://www.plasticcow.com/wiseguy)

Vinnie and Dan find evidence of the counterfeiting ring in Utah, but it seems to have come too easily, so Vinnie heads into the mountains to meet a billionaire recluse, Prescott Wilson, who might hold the key to the truth in the case. Frank and Vinnie convince Senator Pickering to delay passage of Senator Getzloff's trade bill while they search for the plane carrying the yen. Masters presents the Attorney General with photos of Vinnie and Kate talking with Wilson, as well as the printing plate with Vinnie's prints on it. Frank is ordered to arrest Vinnie. (source: http://www.plasticcow.com/wiseguy)

Vinnie is the fall guy in the alleged plot to disrupt the Japanese economy, prompting the Attorney General to launch a classified Senate investigation that could cost Vinnie his badge. Fearing her career is ruined, Kate attempts suicide. After hearing all the evidence, the Attorney General relieves Vinnie of his duties, stating there's enough to prosecute him for treason. Prescott Wilson arrives and places all the blame on Masters. Masters goes off the deep end and kills Strichen. Vinnie is cleared of all charges. (source: http://www.plasticcow.com/wiseguy)