Immortal (Highlander) - Quickening

When an Immortal is beheaded, there is a powerful energy release from their body which is called a Quickening. Lead Highlander: The Series actor Adrian Paul explains, "The Quickening is the receiving of all the power and knowledge another immortal has obtained throughout his/her life. It is like the receiving of a sacrament or a massive orgasm." The producers describe it so: "The power of the Quickening is the equivalent to a major electrical storm hitting -- windows explode, lights short circuit, it is almost as if the victorious Immortal is in the center of a lightning storm."

This energy is absorbed by the Immortal who did the beheading. Panzer explains that if "an Immortal is decapitated by something other than the sword of the Immortal he was fighting, (...) what we thought was, as long as an Immortal is present, he gets the Quickening." If an Immortal is beheaded and there is no Immortal nearby to receive the Quickening, for example if the beheader is a mortal, then the Quickening dissipates in the sky. Panzer says, "If there is no Immortal present, then the Quickening just goes to the Source." It is not known yet what the Source exactly is.

When a good Immortal beheads an evil one, it rarely happens that the evil Quickening completely overwhelms the personality of the good Immortal, making him evil. This is a Dark Quickening. The converse can also happen; Darius is the only known example of a Light Quickening.

An Immortal knows when a Quickening happens nearby and he knows which Immortal is dead, as demonstrated by Duncan MacLeod in Highlander: The Series. He falls on his knees when his friend Lucas Desiree is beheaded by Howard Crowley, and he knows it is Lucas who died. However, when Duncan witnesses the quickening when Richie kills Kristov in "Testimony", he first suspected that it was Richie who had been killed.

In Highlander: The Series, the producers had to make the beheadings less violent and acceptable to television standards. Panzer explains, "In the movies, you know, we had a lot more license. But this being television in the early 1990s, we couldn't have a lot of body parts flying around. So, we tried to use something that created the idea that somebody got their head cut off, but that it was more like a jolt of light came out of the head, and the lightning flew around them. This, I suppose, was less violent than the movie version."

Consequently, the Quickening scene in the pilot episode "The Gathering" is described in the script as follows : "We will call this shot for want of a better term, the Quickening Thrust. This will be one of our signature shots of the show. Perhaps it is a strobed, slow-motion shot. Perhaps there is particular glint to the sword as it slashes towards us on a POV shot, representing the coup de grâce which is about to be delivered. In any event what we will NOT see, is a decapitation. No head leaves the body, indeed no sword strikes the neck. Instead, we cut to : The Quickening is a blinding flash of blue light emanating from what was the bad guy and filling the screen and arcing into anything electrical nearby. Thus, street lamps, car headlights, windows, etc. are blown out."