4x1 - Fruit of the Poisonous Tree (1)

November 10, 1990

While Frank is in Washington to talk to Paul about returning to work, Dan calls to say Vinnie missed his last check-in. Frank goes to Vinnie's house and finds evidence that he was kidnapped. Despite Paul's objections, Frank begins his own investigation, finding out from Carlotta that Vinnie was looking into the death of a priest in El Salvador. Frank follows the trail to Miami and Michael Santana, a disbarred Federal prosecutor, and the last person Vinnie contacted. Santana refuses to help Frank, saying he doesn't know anything about Vinnie's disappearance. Digging deeper, Frank stumbles upon a CIA investigation and is ordered to back off. (source: http://www.plasticcow.com/wiseguy)

4x2 - Fruit of the Poisonous Tree (2)

November 10, 1990

4x3 - Black Gold

November 17, 1990

4x4 - The Gift

November 24, 1990

4x5 - La Mina

December 1, 1990

4x7 - Point of No Return

December 8, 1990

4x8 - Dead Right

December 15, 1990

4x9 - Changing Houses

December 22, 1990