Lawyer Robert Waverly is leaving his mistress' apartment with his video camera when he spots two men with swords in fight to the death. Waverly gets it all on tape - the fight, the beheading, the Quickening. When he later encounters MacLeod, the victor of the battle he taped, he tries to cut a deal: if MacLeod kills Waverly's wife, then Waverly won't go to the police.
When Kurlow, partner of the Immortal MacLeod killed on the tape, comes after MacLeod, Waverly, unaware of what he's dealing with, proposes another deal. A la "Strangers on a Train," Waverly will kill Kurlow and MacLeod will kill his wife, and no one will suspect a thing. Disbelieving Duncan declines, but Waverly carries on and challenges Kurlow, who kills Waverly easily. MacLeod is left to save Waverly's wife and challenge Kurlow.