Kolchak: The Night Stalker, a 1974 television series based on the movie, starring Darren McGavin
He went on to direct four other feature films and hundreds of television episodes such as Charlie's Angels, The Dukes of Hazzard, Kolchak and Cagney & Lacey.
Notable examples include fictional confrontations between Aztec mummies and the Lone Ranger (comic book), Kolchak (television), and Mil Máscaras (film).
His film credits span 125 motion pictures including My Sweet Charlie, That Certain Summer, The Savage is Loose, The Andromeda Strain, Starship Invasions, The Judge and Jake Wyler, several Columbo TV movies, Frankenstein: The True Story, The Six Million Dollar Man, Night Gallery and Kolchak: The Night Stalker.
Pflug was the co-star of the made for television movie, The Night Strangler of 1973, which was a sequel to The Night Stalker of 1972, and a precursor of the TV series Kolchak: The Night Stalker of 1974-1975.
He also attracted suspension from the House for asserting that the government was supporting the Kolchak forces in Russia.