Highlander: The Series
Season 1, Episode 20: Avenging Angel
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When fatal stabbing fails to kill him, Alfred Cahill becomes convinced that he has been chosen by a higher power to wage a crusade against 'perversion', and cuts a bloody path through Paris, murdering prostitutes and pimps, and endangering an old friend of Tessa's who has become a call girl. MacLeod tries to explain Immortality to Cahill, but he can't get through to him, and finally is forced to take his head.
All Episodes - Season 1
Episode 1
The Gathering
Episode 2
Family Tree
Episode 3
Road Not Taken
Episode 4
Innocent Man
Episode 5
Free Fall
Episode 6
Bad Day in Building A
Episode 7
Mountain Men
Episode 8
Deadly Medicine
Episode 9
The Sea Witch
Episode 10
Revenge is Sweet
Episode 11
See No Evil
Episode 12
Eyewitness
Episode 13
Band of Brothers
Episode 14
For Evil's Sake
Episode 15
For Tomorrow We Die
Episode 16
The Beast Below
Episode 17
Saving Grace
Episode 18
The Lady and the Tiger
Episode 19
Eye of the Beholder
Episode 20
Avenging Angel
Episode 21
Nowhere to Run
Episode 22
The Hunters