Kolchak: The Night Stalker is een Amerikaanse serie van de zender ABC. De serie ging in première in 1974.
Kolchak was originally two made-for-TV movies that aired in the early 70's, and featured the adventures of Carl Kolchak, a down-on-the heels reporter who ran afoul of a vampire in Las Vegas and an alchemist in Seattle. These movies proved popular enough that they were spun off into a series, which placed Kolchak in Chicago with the Independent News Service. Each week for 20 weeks he investigated various supernatural and supranatural creatures, ranging from aliens to vampires to Aztec sacrificial cults. Although it only lasted one season on ABC, Kolchak has remained a cult favorite and been kept alive through the efforts of creator Jeffrey Grant Rice, Mark Dawidziak, and the folks at Moonstone Comics, who have two Kolchak comics going (see Links). There's an anthology of Kolchak stories coming out this year and discussion of a new Night Stalker (2005) series produced by The X-Files's Frank Spotnitz for ABC.
The strange disappearance of an antique motorcycle is the first indication of trouble. What follows are a rash of murders where each victim is decapitated with superhuman force by what witnesses report is a headless motorcyclist. As Kolchak investigates, he discovers that the victims were all members of a cycle gang back in the 50's. A prank they played on a rival gang member, Harold ""Swordsman"" Baker, resulted in his unintentional decapitation. Baker's ghost killed several of their gang back in the 50's until his head was reunited with the rest of his corpse. However, the cemetary where Baker was interred was dug up and his head and body separated once more. Now, Kolchak must reunite the head and body once more before the headless cyclist finishes off the gang.