Episode 22 of "Highlander"
s01e22 The Hunters

On the barge Tessa and Duncan are making love when Duncan senses another immortal nearby. When he goes for his sword there is knock at the door and Hugh Fitzcairn enters. He is an old friend of Duncan's, come to give him some news. Outside, Hugh esplains that three of their buddies have gone missing without a trace. Darius is working on something in the church when the doors open. A group of men make their way toward Darius as the phone rings in the background. Duncan is desperately trying to contact Darius but when no one answers the phone Duncan and Hugh rush to the church. Just outside the church neither one of them can sense Darius in the church. Inside Duncan finds the headless body of his oldest friend Darius. Hugh and Duncan track down a group of men and they start to fight. The men get away and the immortals give chase. They split up and Duncan gets one of the men, but when he questions him, he kills himself. Meanwhile Hugh is captured. Duncan goes back to the church and finds a very old book and takes it home. After inquiring where Richie is he heads off to make sure he is safe. Duncan arrives at the antique store and notices one of the men. He chases him to a grassy square where others come out to fight Duncan. Duncan holds his own for a while but is soon cut on the chest and peppersprayed in the eyes. Richie suddenly arrives on his motorcycle and helps MacLeod until people come out and question what they are doing. Meanwhile in a hidden location, Horton(the leader of the men) is unsure if Fitzcairn is an immortal so he has someone fire a crossbow at him. On the barge Duncan is studying the book and learns that there are men out there that have been watching immortals for centuries. Outside Duncan spots a vehicle watching them so he has Richie distract the driver while MacLeod knocks him out. He then tells Richie to move the barge and when the guy wakes up he follows him to his hideout. At the hideout Fitcairn is confirmed to be an immortal and straps him into a guillotine.(sp?) Fitz begs not to die this way until he senses MacLeod and then stalls for time. Duncan arrives and battles the men with Horton looking on. Eventually it's just Duncan and Horton. Horton fires a taser at MacLeod and weakens him. Horton tells him that he knows all about immortals and that the human race will not be dominated by immortals and that is why he's killing them. Horton eventually runs off and Duncan frees Fitz. On the barge Duncan, Tessa, Richie, and Fitz pay their last respects toward Darius as Duncan throws his ashes into the sea.