Kolchak was a 1970's TV series that starred Darren Mcgavin as a struggling journalist in an ill fitting white suit and white pork pie hat. In the pilot episode he stumbled upon a real vampire whilst investigating a series of brutal murders, of course no one believed him and he had no physical evidence to back up his claims.
The series followed this vain throughout, every week he battled against a variety of paranormal horrors, werewolves, mummies, zombies etc. The series has recently been rehashed on the Bravo channel but its not a patch on the original which is a classic. Put it this way, no kolchak, no X-files !