From 1959 to 1963, the sitcom centers on the Mitchell family—Henry, Alice, and their spirited son, Dennis. Full of energy and mischief, Dennis frequently finds himself in comedic chaos, especially when crossing paths with his grumpy neighbor, George Wilson, a retired salesman who values tranquility. Later, George's brother John, a writer, also becomes entangled in Dennis's antics. Despite his well-meaning intentions, Dennis's attempts to assist often backfire hilariously, leaving Mr. Wilson to deal with the unintended consequences of the boy's adventures.
Seasons & Episodes
Season 1
Season 1
32 ep
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Dennis Goes to the Movies
Dennis and the Signpost
The Fishing Trip
Grandpa and Miss Cathcart
Innocents in Space
Dennis' Garden
The New Neighbors
Tenting Tonight
Dennis Sells Bottles
Mr. Wilson's Award
The Christmas Story (aka Dennis & Christmas)
Dennis and the Cowboy
Dennis Haunts a House
Dennis' Tree House
Dennis and the Rare Coin
Dennis and the Bike
Dennis and the Open House
Dennis and the Duck
Dennis and the Swing
Dennis and the Dog
Mr. Wilson's Sister
Dennis and the TV Set
Dennis Creates a Hero
Dennis' Paper Drive
Dennis and the Bees
Alice's Birthday
Dennis Becomes a Baby Sitter
Dennis and the Starlings
The Party Line
Dennis by Proxy
Dennis Runs Away
Miss Cathcart's Sunsuit
Season 2
Season 2
38 ep
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Out of Retirement
Dennis and the Wedding
Dennis and the Radio Set
Dennis and the Ham-pher
The Stock Certificate
Man of the House
The Rock Collection
Henry and Togetherness
Paint-up, Clean-up Week
Dennis Learns to Whistle
The Raffle Ticket
The Christmas Horse
Dennis' Allowance
Dennis' Penny Collection
Dennis, the Campaign Manager
Miss Cathcart's Friend
Pythias Was a Piker
Dennis and the Saxophone
Wilson Sleeps Over
Dennis' Birthday
Dennis Goes to Camp
Dennis' Tool Chest
The Going Away Gift
Dennis and the Fishing Rod
Dennis and the Good Example
Dennis' Obligation
The Dog Trainer
Woodman, Spare That Tree
The Boy Wonder
The Soapbox Derby
Dennis and the Camera
Dennis and the Miracle Plant Food
Dennis' Newspaper
Mr. Wilson's Paradise
The Fortune Cookie
The Pioneers
Father's Day for Mr. Wilson
Dennis and the Picnic
Season 3
Season 3
38 ep
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Trouble from Mars
Best Neighbor
Keep Off the Grass
Mr. Wilson's Safe
Haunted House
The School Play
The Fifty-Thousandth Customer
Dennis and the Pee Wee League
Mr. Wilson's Inheritance
Dennis Is a Genius
The Lucky Piece
The Fifteen Foot Christmas Tree
Dennis' Bank Account
Through Thick and Thin
Calling All Bird Lovers
Silence Is Golden
Dennis Has a Fling
Frog Jumping Contest
Where There's a Will
Mr. Wilson's Uncle
A Quiet Evening
The Private Eye
Mr. Wilson's Housekeeper
A Dog's Life
Dennis' Documentary Film
Horseless Carriage Club
Junior Pathfinders Ride Again
The Treasure Chest
Wilson Goes to the Dentist
The Man Next Door
Dennis and the Dodger
Dennis' Lovesick Friend
John Wilson's Cushion
John Wilson Wins a Chicken
The Bully
The Club Initiation
Community Picnic
Dennis and the Witch Doctor
Season 4
Season 4
38 ep
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The Chinese Girl
You Go Your Way
Dennis and the Circular Circumstances
The Little Judge
Poor Mr. Wilson
Dennis in Gypsyland
The New Principal
San Diego Safari
Dennis at Boot Camp
Henry's New Job
Wilson's Second Childhood
Jane Butterfield Says
Dennis and the Hermit
My Uncle Ned
Junior Astronaut
Wilson's Little White Lie
Dennis, the Rain Maker
The Creature with the Big Feet
Dennis, the Confused Cupid
Dennis Goes to Washington
The Big Basketball Game
Wilson's Allergy
Baby Booties
My Four Boys
Dennis and the Homing Pigeons
A Tax on Cats
The Uninvited Guest
Dennis Plays Robin Hood
The Three F's
Never Say Dye
The Lost Dog
Tuxedo Trouble
Hawaiian Love Song
The Lucky Rabbit's Foot
Listen to the Mockingbird
First Editions
A Man Among Men
Aunt Emma Visits the Wilsons
