Carl Kolchak in “The Ripper”

[Voiceover intro] If by chance you happened to be in the Windy City between May 25 and May 29 of this year, you would have had good reason to be terrified. During this time Chicago was stalked by a horror so frightening, so fascinating, that it ranks with the great unsolved mysteries of all time. It's been the fictional subject of films, plays, even an opera. Now, here, are the true facts.