My Three Sons - Season 9 (1968)

Steve (Fred MacMurray) meets with a hard-boiled Air Force general (Arthur O'Connell) to sell a company product, but the general - himself a new grandfather - after learning that Steve is about to become a grandfather, becomes an easy sell as he eagerly shares his experiences as a grandfather.

Robbie (Don Grady) and Katie (Tina Cole) realize that they will need help with the babies immediately after they are born, and seek out to hire a baby nurse. Uncle Charley (William Demarest) wants the job, and is disappointed by not being asked, so he sets out on a series of baby sitting jobs to gain experience. He panics in his first experience with an actual baby and needs to call in Katie for advice, but he quickly becomes the favorite baby sitter in the neighborhood. While Rob and Katie realize he could do the job, they feel it is too much to ask now that Charley has a successful baby sitting ...

Katie (Tina Cole) feels like she is getting as big as a house, even bigger than her pregnant friend Lisa (Barbara Boles), who is over due. While Robbie (Don Grady) is away on military reserve training (again!), Steve (Fred MacMurray) takes Katie to her OB appointment, where her doctor (Leon Ames) reveals why she is getting so large - Katie is having more than one baby. Katie doesn't want anyone to know before she can tell Robbie, but she's already getting her first labor pains and Robbie cannot be contacted.

Robbie is on Army maneuvers unaware Katie is expecting triplets. Steve and Uncle Charley must get her to the hospital when her labor pains start. Hospital rules only allow two people in the waiting room per mother. Robbie rushes home.

Rob and Katie bring the triplets home from the hospital and reveal their names - Robbie Jr, Steve II and Charley - much to the delight of their namesakes. But Rob soon tires of all the attention that the triplets get and the repeated questions that everyone is asking - "How do you tell them apart?" But eventually Rob gets accustomed to the curiosity of his friends and neighbors.

Feeling that he's not contributing enough to the household expenses, Robbie (Don Grady) decides to quit school, get a job, and move his family into their own place. Rob's college counselor (Vince Howard) urges him to think it over before rushing into such a major decision, and asks the administration office to delay his paperwork over the weekend. The stalling tactic gives Rob enough time to discover that despite the added financial burden placed on his father, Steve (Fred MacMurray) enjoys taking care of his grandchildren, and that he has plans to redesign Rob's room to accommodate Rob, Katie (Tina Cole) and ...

It seems that everybody has something planned for Friday night - except Ernie (Barry Livingston). But since this will be the first time Rob (Don Grady) and Katie (Tina Cole) are away from the triplets, they are reluctant to leave Ernie alone with the babies, so they hire a sitter recommended by the family doctor. However, the sitter (Rose Marie) seems to be more interested in watching television than watching the babies. After repeated calls from worried family members, she takes the phone off the hook, but now the constant busy signal causes more anxiety, so the family members all rush home, only to find that ...

When Uncle Charley goes to pick up his date, Sally, he finds that not only has he been stood up, but Sally has run off to Las Vegas to get married. So Charley is in the dumps until a group of women fawn over him when he takes the triplets out to the park, and Charley tells the women that he is the grandfather.

The triplets are teething and Katie is exhausted from the constant care they need and from lack of sleep. She and her mother go to Santa Barbara for a few days of doctor prescribed rest while the family takes care of the babies.

Steve plans to have a bedroom enlarged to include a nursery. The contractor he hires locks horns with everyone except Katie. It turns out that after having recently lost his wife and daughter, he's blessed with his first granddaughter.

Steve's friends set him up to meet - in Ernie's words - "some clunky woman." The family tries to give the impression that Steve (Fred MacMurray) isn't really as old as he seems, when the woman (Wanda Hendrix) acts more and more surprised meeting each of Steve's sons, who is older than the previous.

The family doubts Katie's accuracy in identifying the triplets, unaware that she has placed ink dots on the baby's feet to assist her. Steve bathes them unaware he washed off the ink. Katie takes them to the hospital to match footprints.

Chip (Stanley Livingston) has a new girlfriend, Debbie (Angela Cartwright), and their relationship is progressing at a rapid pace. Shortly after convincing Debbie to drop her swimming class for home economics, Chip and Debbie announce that they are engaged. While both families are concerned about the situation, they don't interfere with the kids, until one day Katie (Tina Cole) suddenly faints and Robbie (Don Grady) has to take her to see the doctor, leaving Chip and Debbie alone to take care of the triplets. After several frenzied hours with the babies, the couple decide that they are moving too fast and to just be ...

Steve is recruited to be a double agent willing to sell secrets to America's enemy. He's whisked off to New York to meet his contact, an attractive younger woman. She suspects Steve is not genuine and leads him through a series of tests.

Chip (Stanley Livingston) almost has enough money to buy a hot rod from his school chum Wayne (Kevin Brodie), but Steve (Fred MacMurray) reminds him that he's forgetting about insurance and other costs associated with car ownership. Chip is disheartened, so Steve buys him a car for his birthday - a 30-year-old Tin Lizzie adorned with silver bud vases, which evokes fond memories for Steve, but is typically driven by old ladies. The entire family sees that Chip is disappointed, and Chip is embarrassed to be seen in the car, although he tells the family that he loves it. Shortly thereafter, his friend with the hot...

Steve's former Bryant Park co-worker, Ray Wong has transferred to Los Angeles and tells Steve his pregnant daughter's husband is a long-haired hippie. Though intelligent, the son-in-law hasn't any direction in life. Ray seeks Steve's help.

Alternate title: I Told You So. Chip (Stanley Livingston) and Ernie (Barry Livingston) spot Robbie (Don Grady) with an attractive young woman (Linda Miller), and tell their father about it, but Steve (Fred MacMurray) says that there is probably a good reason and not to worry about it. Meanwhile, Uncle Charley (William Demarest) gets frazzled when he hears a rumor that the city is going to widen the streets, so he starts up a petition to prevent it from happening despite, as Steve points out, that he doesn't know for sure what the city is planning. Eventually, Charley learns that a councilman was just having crosswalks painted, and the young woman was ...

Ernie becomes somewhat depressed when he learns his best friend Gordon is moving away. The two decide to spend as much time as possible hanging out together until moving day.

Charley starts dating the grandmother of Ernie's friend, Janet. The teens are shocked at the scandal of the old people acting young.

Ernie writes to Maria (Silvia Marino), a pen-pal of Spanish nationality. He invites her to dinner at his home.

Ernie thinks that he has ESP, when he's the only person in his class to guess the correct color of a card held up by his teacher (Booth Colman).

Steve's co-worker and golf buddy Harry (Don DeFore) suggests that Steve (Fred MacMurray), Chip (Stanley Livingston) and Ernie (Barry Livingston) go to the company picnic with himself and his son and daughter. But despite the efforts of the parents, the kids mutually dislike each other.

Ernie is smitten with a classmate, Margaret, who shows no interest while Iris does. He asks his dad what to do. Steve suggests changing his appearance. Ernie comes to school the next day with his hair slicked back but Margaret is unmoved.

Steve (Fred MacMurray) is cast in the role of marriage counselor by a young couple (Johnny Washbrook and Beverly Lunsford), who turn to him for help.

Ernie (Barry Livingston) is in an advanced English class with a strict but efficient teacher (Sylvia Sidney).