Kolchak: The Night Stalker - Season 1 - Eps 15: Chopper
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.
About Kolchak: The Night Stalker

Title: Kolchak: The Night Stalker
First Air Date: 1974-09-13
Last Air Date: 1975-03-28
Status: Ended
Rating: 7.575/10 (from 80 votes)
Language: EN
Seasons: 1
Total Episodes: 20
Network: ABC
Genres: Drama, Mystery, Sci-Fi & Fantasy
Production Companies: Francy Productions, Universal Television, Dan Curtis Productions, ABC Circle Films
Synopsis
Kolchak: The Night Stalker is an American television series that aired on ABC during the 1974–1975 season. It featured a fictional Chicago newspaper reporter who investigated mysterious crimes with unlikely causes, particularly those that law enforcement authorities would not follow up. These often involved the supernatural or even science fiction, including fantastic creatures.
Cast

Darren McGavin
Carl Kolchak

Simon Oakland
Tony Vincenzo

Jack Grinnage
Ron Updyke