ABC airs the 20th and final episode of Kolchak: The Night Stalker, based on Jeff Rice’s novel and the 1972 TV movie The Night Stalker, starring Darren McGavin. Tom Bosley (Happy Days) and John Hoyt (Star Trek: The Cage) guest star. A remake with a new cast, simply titled Night Stalker, will be attempted in the early 21st century, also on ABC, but will have an even shorter lifespan than the original series. 
A scientist’s discovery of a node containing strange blue nodules triggers a series of grisly deaths at an underground archival facility. Each victim is badly mauled, and the autopsy report indicates that they were bitten by some large animal. Sneaking into the facility, Kolchak discovers that the staff are leery of strange occurrences, and the military has taken in security. He himself witnesses a strange two-legged lizard creature and narrowly escapes. He is evicted from the facility, but does some research to discover that the lizards are phototropic (afraid of light). Realizing that the nodules are in fact eggs, Carl sneaks back in to the facility. The “sentry” has killed more people in its search, and Kolchak must return the eggs by risking his own life.
written by L. Ford Neale & John Huff
directed by Seymour Robbie
music by Jerry FieldingCast: Darren McGavin (Carl Kolchak), Simon Oakland (Tony Vincenzo), Kathie Browne (Lt. Irene Lamont), Albert Paulsen (Dr. James Verhyden), John Hoyt (Dr. Lamar Beckwith), Frank Marth (Colonel Brody), Tom Bosley (Jack Flaherty), Cliff Norton (Arnie Wisemore), Frank Campanella (Ted Chapman), Margaret Avery (Ruth Van Galen), Lew Brown (1st Detective), Keith Walker (1st Reporter), Bill Delz (2nd Reporter), Greg Finley (Dr. Phillips), Tom Moses (Dr. Gordon)
Notes: This episode bears a very strong resemblance to the Star Trek episode Devil In The Dark. Kathie Browne is Darren McGavin’s wife.
LogBook entry by Steve Crowe