Kolchak once saw the “enforcer” who is now killing gang members in a numbers-racket war lying dead in the morgue.  

Kolchak finds a strong resemblance between the murders of several Chicago women and killings by “Jack the Ripper” in the 1800s.  

Reporter Kolchak (Darren McGavin) searches Seattle for a killer who seems to be strangling his victims every 20 years and taking a little of their blood.  

Spock abducts his former commander and locks the Enterprise on course to Talos IV then turns himself in for Court Martial.

After several high-profile newspapers fire him for his difficult attitude, investigative journalist Carl Kolchak (Darren McGavin) finds a job following the police beat for a small Las Vegas publication. When Carl discovers a series of dead showgirls drained of blood

After the Enterprise attempts to cross the Great Barrier at the edge of the galaxy, crew members Gary Mitchell and Elizabeth Dehner develop “godlike” psychic powers which threaten the safety of the crew.

The Enterprise is menaced by a gigantic alien ship whose commander condemns the crew to death. The alien ship appears all-powerful and the alien commander refuses all attempts at negotiation, forcing Kirk to employ an unorthodox strategy to save the ship

The Enterprise pursues a vessel and rescues its occupants, interstellar con man Harry Mudd, who is arrested on outstanding charges, and three incredibly beautiful women, his cargo. After Kirk diverts to a mining planet to obtain new dilithium crystals for the Enterprise,

The Enterprise visits planet M-113 for a routine medical inspection of the husband-wife archaeological team stationed there, but the crew finds that the wife has been replaced by a deadly, shape-shifting creature.

While traveling aboard the Enterprise, a dangerous young man named Charlie Evans terrorizes the crew with his unusual mental powers. This episode serves as the backstory for the unofficial mini-series Star Trek : Of Gods and Men.  

While investigating a series of destroyed outposts, the Enterprise discovers a lone Romulan vessel with a Cloaking Device. The Romulans, having never been seen by humans, are revealed to visually resemble Vulcans, casting doubt on Mr. Spock’s loyalty as the two ships become

In search of Nurse Chapel’s fiancé, renowned Exobiologist Roger Korby, the Enterprise visits the icy planet Exo III, where Korby has discovered an ancient machine which allows him to duplicate any living person with an Android replacement. Korby plans to use the machine to spread