The 43rd episode of Gene Roddenberry’s science fiction series Star Trek premieres on NBC. Robert Bloch, writer of the novel that inspired Hitchcock’s Psycho, returns with a script recasting Jack the Ripper as an extraterrestrial entity wreaking havoc down through the ages (with an airdate just before Christmas!). 
Stardate 3614.9: After suffering a head injury on the Enterprise, Scotty is talking into shore leave with Kirk and McCoy. On the planet they are visiting, however, a series of grisly murders of local women begins, and all the evidence seems to point to Scotty. Kirk must contend with the overwhelming evidence against Scotty as well as the overzealous local constable, who is ready to have Scotty punished as soon as possible.
written by Robert Bloch
directed by Joseph Pevney
music by Gerald FriedCast: William Shatner (Captain James T. Kirk), Leonard Nimoy (Mr. Spock), DeForest Kelley (Dr. Leonard McCoy), James Doohan (Mr. Scott), George Takei (Lt. Sulu), Nichelle Nichols (Lt. Uhura), John Fielder (Hengist), Charles Macauley (Jaris), Pilar Stewart (Sybo), Charles Dierkop (Morla), Joseph Bernard (Tark), Tania Lemani (Kara), John Winston (Transporter Chief Kyle), Virginia Aldridge (Karen Tracy), Judy MocConnell (Yeoman Tankris), Judi Sherven (Nurse)
LogBook entry by Earl Green