The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
When Rhoda's apartment is destroyed by fire, she moves in with Mary. The two find that while they are best friends, they make awful roommates.
Archie is too proud to let Edith accept a mink stolen from her cousin Amelia, until he sees a chance to make a three-hundred-dollar profit.
Lamont comes down hard on Fred to try to get him to quit smoking and has him go to the doctor for a chest x-ray. Later, the results are sent in the mail and Fred becomes convinced he has tuberculosis.
Felix overreacts when his daughter dates a reform school inmate.
It's a battle of the sexes as Shirley and Laurie prove to their male chauvinist counterparts to be better able to handle the wilderness.
To retain the family jewels, an elderly Russian duchess must present proof of her marriage into the Russian Royal Family, which she says she can do with the help of a journal kept by one of Brett's uncles.
Hannibal Heyes and Kid Curry, two of the most wanted outlaws in the history of the West, are popular "with everyone except the railroads and the banks".
A ghastly shocker about a surgery instructor unconcerned about the source of his cadavers. Convinced that her husband is trying to worry her to death, a distraught housewife files a complaint with the police. A gangster on the lam engages the services of a compliant exporter.
An architect kills his business partner and deliberately lets Columbo suspect him, leading Columbo to think that he's hidden the body in the foundation of a building under construction. He plans to let Columbo dig up the site and find nothing, knowing that its the perfect place to hide the body since Columbo would never look in the same place twice.
Three real estate crooks die horrible and mysterious shellfish related deaths, and McGarrett and the others must establish the link between them, and who has reason to want them dead.
Julie, Link and Pete break down in the desert during a sandstorm and seek shelter in an abandoned mine. An old man embittered by the death of his son in the war who hates hippies then sets off dynamite and traps the trio inside.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
All about Joe and Hoss' visit to a small Mexican town named Agua Santos, which seems to have some rather peculiar laws. The two Cartwright boys soon find them in pretty deep trouble for breaking ""laws"" that barely would pass without notice stateside.
Serena returns for the last time and babysits with Tabitha and Adam. Larry comes by to return a golf club and Serena does an Abby Cunningham on him. Larry hurries off, but not before Serena gives him a pill to be young and active (pre-Viagra!). It makes him younger, all right, by ten years! Larry gets even younger and younger and everyone is very worried about him. Serena gives him an antidote which turns him back to normal.