Highlander: The Series - Season 6 - Eps 4: Diplomatic Immunity
Embezzler, charmer, and con man extraordinaire, Willie Kingsley has a knack for turning up dead... and profiting from it handsomely. But when one last con goes horribly wrong, resulting in the death of his mortal wife, Willie turns to Duncan MacLeod to help him track down her killer. MacLeod wants justice... Willie wants revenge.
About Highlander: The Series

Title: Highlander: The Series
First Air Date: 1992-10-03
Last Air Date: 1998-05-16
Status: Ended
Rating: 7.399/10 (from 392 votes)
Language: EN
Seasons: 7
Total Episodes: 119
Network: Syndication
Genres: Sci-Fi & Fantasy, Drama, Action & Adventure
Production Companies: Reteitalia, RTL, Gaumont International Television, Amuse Video, Atlantique Productions, Rysher Entertainment, M6 Métropole Télévision, Filmline International, Davis-Panzer Productions, TF1 Films Production, Amuse Soft Entertainment
Synopsis
Duncan MacLeod cannot die -- he is a 400-year-old immortal, who has seen his share of humanity's history. Still, he risks his life in battle against other immortals and tries to save people from harm.
Cast

Adrian Paul
Duncan MacLeod

Jim Byrnes
Joe Dawson