|Season 6, Episode 4|
|Airdate||October 25, 1997|
|Written by||James Thorpe|
|Directed by||Richard Martin|
Sins of the Father
Patient Number 7
|Highlander — Season Six|
| This article about an episode needs to be expanded with more information.|
Please help out by editing it.
Diplomatic Immunity is the fourth episode of the sixth season of Highlander, and the one hundred tenth episode overall.
Starring: Adrian Paul (Duncan MacLeod), Elizabeth Gracen (Amanda) (credit only), Peter Wingfield (Methos/Adam Pierson) (credit only)
and Jim Byrnes (Joe Dawson) (credit only)
Guest Starring: Jasper Britton (Willie Kingsley), Anita Dobson (Molly Ivers), Ed Bishop (Edward Banner), Alexis Denisof (Steve Banner)
Featuring: Paula Jane Ulrich (Young Molly Ivers), Paul Bandey (Swinson), Malcolm Rennie (Smythe), Edward Hamilton-Clarke (U.S. Investigative Service Guard), Martin Jaubert (The Butler)
An immortal friend of Duncan's is out for justice when his wife is murdered and the evidence leads back to a diplomat. As he also happens to be a friend, Duncan tries to keep him safe by compelling him to give up the real murderer he's protecting.