| Sesame Street | |
| Plot | Telly the Detective repeat from season 16 |
| Air date | December 11, 1986 |
| Season | Season 18 (1986-1987) |
| Sponsors | E, S, 4 |
| Picture | Segment | Description |
|---|---|---|
 | Muppets | On the vaudeville stage, Big Bird and Snuffy identify S words and tell gum-wrapper jokes. |
 | Cartoon | A girl inflates a balloon in the shape of an S. (First: Episode 0414) |
 | Film | A boy climbs up a tree to gather coconuts. (EKA: Episode 1125) |
 | Cartoon | The alphabet is presented in a chain reaction of events. |
 | Muppets | Ernie & Bert — Ernie wears socks on his ears and on his nose in order for Bert to guess which body part he's thinking of. (EKA: Episode 1732) |
 | Animation | A hand draws a ditch, and some kids try to figure out a way to get across it. |
 | Insert | The Professor explains to Big Bird how he invented the alphabet. (EKA: Episode 2018) |
 | Film | Antelopes nod "yes." Music by Joe Raposo (EKA: Episode 0822) |
 | Cartoon | A man shows the viewers his "YES" machine. (First: Episode 0822) |
 
| Muppets | The Count's main jumping-over-the-bed flock of sheep quits on him, so he calls the "24 Hour Emergency Counting Service". A reluctant deliveryman in sheep's clothing laments, "It's not an easy way to make a livin' ..." (EKA: Episode 2122) |
 | Cartoon | Joe's Lap (limerick) (EKA: Episode 0825) |
  | SCENE 1 | While reading "How to Be a Great Detective," Telly learns about employing disguises. He dons a dark beard and attempts to listen in on Olivia and Maria's conversation about the weather, but he's instantly recognized. |
 | SCENE 1 cont'd | Telly thinks he can fool Gordon, but he also recognizes him, pointing out he's the only guy on the block with that hair, eyes and fur. Telly realizes the beard isn't enough and goes to get more disguises. |
 | Cartoon | Two hippie kids wonder how to make their droopy plant grow. (First: Episode 1484) |
 | Muppets / Cast | Bob sings "People in Your Neighborhood" with a dentist and a bus driver. (remake) |
 | Film | A Stool For Me (EKA: Episode 0536) |
 | Cast | Charlie Chaplin obeys the word HOP, then switches it to STOP. |
 | Cartoon | Donnie Budd counts four lions. (First: Episode 0300) |
 | Film | Marching Band #4 (EKA: Episode 1188) |
 | Cartoon | Billy Jo Jive and Smart Suzie Sunset help Wrong Way Willie find his missing house keys. (First: Episode 1508) |
  | SCENE 2 | Telly has added a wig, tie and pipe to his disguise, sure no one will know it's him. The Kids pick up on it the second they see him, despite him insisting he's Inspector O'Reilly. Maria finds him sad and he explains his situation. Maria then approaches the other adults and convinces them to pretend to be fooled by Telly's next disguise. |
 | Cartoon | A lost man in the desert asks a stranger for directions to the city. He builds a pretend city out of sand to show what it looks like. As it turns out, the stranger is an alien. (First: Episode 0763) |
 | Muppets | Kermit tries to talk about subtraction with the numbers 1, 2, 3, 4 and 5, but they keep disappearing one by one, which makes it hard for him ... or does it? (EKA: Episode 2058) |
 | Cartoon | Adding up five ladybugs and five lizards (EKA: Episode 0277) |
 | Film | A boy and his dad go on a hike. (EKA: Episode 2179) |
 | Cartoon | A door opens behind a mouse, who shrieks when she sees the E. Artist: Bruce Cayard (EKA: Episode 0720) |
 | SCENE 3 | Telly's added more to his disguise (even changing his voice) and passes by the adults, who act as if he's a different person. They go so far as to believe he's a detective disguised as Telly, despite his desperate claims he's not. As they head off, Telly isn't sure he wants to be a detective anymore, thinking his disguises would better help him as an actor. |
 | Cartoon | Es un gato (EKA: Episode 1966) |
 | Muppets | Grover plays a detective at his office. A frantic city gent (Brian Muehl) rushes over to warn him about something that's bothering him outside, which, unbeknownst to both of them, turns out to be a very strong wind that blows everything away—including Grover's office. (First: Episode 1650) |
 | Cartoon | E for Eel (First: Episode 0408) |
 | Muppets | Muppet & Kid Moment — Forgetful Jones asks Daniela if she will tell him the word on a sign, which says "Yes". But every time she tells him the word, he thinks she is saying yes to telling him the word. (EKA: Episode 2176) |
 | Film | Wendy makes cookies with her grandmother. They later visit Wendy's great-grandmother at the nursing home, and give her some of the cookies. |
 | Animation | Four genies carry the number 4 into a castle. Artist: Ishu Patel |
 | Muppets | Four Anything Muppet cheerleaders give 4 big cheers for the number 4. (First: Episode 0132) |
 | Cartoon | Various sounds are demonstrated, including an alarm clock, a baby crying, a telephone, a faucet dripping, and a boy sneezing. Artist: Irra Verbitsky (First: Episode 1483) |
 | Film | Kids count 5 racehorses. (EKA: Episode 1275) |
 | SCENE 4 | The kids put on the disguises and Telly is amazed by them ("I'm among strangers!"). Maria announces the sponsors. |
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| Episode 2243 | Episode 2253 |
