The One with the Greek Coin

In the episode where this guy "buys" an archaeologist's life, and gets the credit for the real archaeologist's discoveries, Bonasera visits the Greek embassy on the track of possible smuggling of ancient Greek artefacts, like the coin found on the dead "archaeologist". She recognises one of the embassy guys as someone who had earlier attacked her, trying to warn her off the case. This episode ends rather abruptly. Was there ever a part two, or are we left to believe the smuggling racket is too big to tackle if embassy staff are in on it?

And what about the murder of the judge back in the 1930s? That just gets mentioned in passing, though the fake archaeologist was trying to solve it.