Season 3
38 episodes · Oct 1, 1961
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- S3E1
Trouble from Mars
Oct 1, 196130mMr. Wilson accidentlly gets a space helmet that belongs to Dennis stuck on his head.
- S3E2
Best Neighbor
Oct 8, 196130mDennis and Mr. Wilson camp out on a moutain so that Dennis can join the Junior Pathfinders club.
- S3E3
Keep Off the Grass
Oct 15, 196130mHenry gets a ticket for walking on the grass in the park. When Mr. Wilson hears about it he thinks it isn't fair, So he convinces Henry to go to court and contest it.
- S3E4
Mr. Wilson's Safe
Oct 22, 196130mDennis is using numbers for a football play which is the combination to Mr. Wilson's safe, So Mr. Wilson and Henry get Dennis so confused that he forgets the combination. Then Mr. Wilson forgets it. Now they are in a real mess because Mr. Wilson has something very important locked in the safe. So Mr. Wilson tries everything including trying to hypnotize Dennis so he can remember the combination. He ends up hypnotizing himself and remembers the combination at last.
- S3E5
Haunted House
Oct 29, 196130mMr. Wilson and Henry both invest in a house that is known to be a haunted house.
- S3E6
The School Play
Nov 5, 196130mDennis' school is putting on a play which Mr. Wilson ends up being in (not by choice) because him and Tommy (who is also in the play) get handcuffed together before the play starts.
- S3E7
The Fifty-Thousandth Customer
Nov 12, 196130mMr. Finch is having a contest that when the fifty-thousandth customer walks in his store they will win 5 minutes of free shopping of which Mr. Wilson is determined to be the one who wins.
- S3E8
Dennis and the Pee Wee League
Nov 19, 196130mMr. Wilson coaches Dennis' Pee Wee League baseball team because Dennis' dad (who originally was the coach) got sick.
- S3E9
Mr. Wilson's Inheritance
Nov 26, 196130mMr. Wilson wants to represent Scotland for Dennis' School
- S3E11
The Lucky Piece
Dec 17, 196130mMr. Wilson tricks Dennis into taking a silver coin that says GOOD LUCK and a horseshoe on it instead of 50 cents that he owes him for cutting his lawn. Mrs. Wilson is very angry with him about it. So, she and Alice start a scheme of their own by making lucky things happen to Dennis all day. Mr. Wilson soon starts to believe that the coin was lucky after all and is sorry he ever let it go. He then realizes that it was all a charade to teach him a lesson.
- S3E12
The Fifteen Foot Christmas Tree
Dec 24, 196130mDennis, Henry and Mr. Wilson go out in the woods and cut down a big Christmas tree which ends up getting almost destroyed by the time they get it home.
- S3E13
Dennis' Bank Account
Dec 31, 196130mDennis opens a bank account at the bank of where Mr. Wilson works at and causes a lot of chaos at the bank.
- S3E14
Through Thick and Thin
Jan 7, 196230mDennis' cub scouts are putting on a circus of which Mr. Wilson is the Lion in the circus, which is suppose to be a secret from everyone.
- S3E15
Calling All Bird Lovers
Jan 14, 196230mMr. Wilson holds a bird lovers session at his home Where a woman does bird calls that sounds just like a bird.
- S3E16
Silence Is Golden
Jan 21, 196230mMr. Wilson agrees to give Dennis his magnifying glass if he doesn't talk around him for the day.
- S3E17
Dennis Has a Fling
Jan 28, 196230mDennis is put on the spot when he askes both Mr. Wilson and Mr. Mactavish to represent Scotland in his school project.
- S3E18
Frog Jumping Contest
Feb 4, 196230mDennis enters his frog in the frog jumping contest with Mr. Wilson as his partner who has a bet with Sgt. Mooney that Dennis' frog will beat his.
- S3E19
Where There's a Will
Feb 11, 196230mMr. Wilson gives Dennis a Gold watch in his will. Soon after that Mr. Wilson begins to feel old and is convinced that he has short time to live.
- S3E20
Mr. Wilson's Uncle
Feb 18, 196230mMr. Wilson's Uncle comes to visit him and convinces him that he isn't in shape, so he starts a physical fitness program and forces Mr. Mitchell and Mr. Wilson to be in it.
- S3E21
A Quiet Evening
Feb 25, 196230mMr. Wilson plans to have a quiet evening at home, but his plans change when Henry needs a sitter for Dennis.
- S3E22
The Private Eye
Mar 4, 196230mMr. Wilson gets his wallet taken by a pick pocket, So Dennis and Tommy try to find the crook for the police.
- S3E23
Mr. Wilson's Housekeeper
Mar 11, 196230mMr. Wilson hires a housekeeper for Mrs. Wilson but soon regrets it when the housekeeper tries to tell Mr. Wilson what he can and can't do in his home. Mr. Wilson then tries to get rid of her.
- S3E24
A Dog's Life
Mar 18, 196230mA big shaggy dog followes Mr. Wilson home and Mr. Wilson tries to get rid of it.
- S3E25
Dennis' Documentary Film
Mar 25, 196230mDennis does a documentary film of the town for a school project with Mr. Wilson's help.
- S3E26
Horseless Carriage Club
Apr 1, 196230mMr. Wilson takes Dennis and his friends up to the lake and back in an old car. Mr. Wilson then gets elected president of the Horseless Carriage Club.
- S3E27
Junior Pathfinders Ride Again
Apr 8, 196230mMr. Wilson attempts to start a fire like the pioneers did for Dennis' Junior Pathfinders club and nearly burns down the place.
- S3E28
The Treasure Chest
Apr 15, 196230mMr. Wilson buys a treasure chest at an auction thinking that it has buried treasure in it. Mr. Wilson later discovers a treasure map drawn by Dennis. Although Mr. Wilson thinks the map is authentic so he plans to take a trip to the island and dig for the treasure.
- S3E29
Wilson Goes to the Dentist
Apr 29, 196230mDennis convinces Mr. Wilson to go to the Dentist for his tooth because Dennis thinks he can get a basketball from the Dentist until he learns that the Dentist only gives away prizes to child patients.
- S3E30
The Man Next Door
May 6, 196230mMr. Wilson thinks his next door neighbor is the stocking bandit and tries to prove it.
- S3E31
Dennis and the Dodger
May 13, 196230mMr. Quigley coaches Dennis' baseball team with help from Sandy Koufax.
- S3E32
Dennis' Lovesick Friend
May 20, 196230mDennis helps Mr. Wilson's Uncle Ned plant flower bulbs in his yard in order to get out of playing house with Margaret Wade.
- S3E33
John Wilson's Cushion
May 27, 196230mGeorge Wilson's brother John Wilson comes to visit, only he has trouble working without his old cushion.
- S3E34
John Wilson Wins a Chicken
Jun 3, 196230mDennis and his friends win John Wilson a chicken, which John wants to cook for dinner and the children try to talk him out of it.
- S3E35
The Bully
Jun 10, 196230mDennis is all set for a big day. He is scheduled to have a fight with Gifford - the school bully.
- S3E36
The Club Initiation
Jun 17, 196230mDennis wants to join an older boys club, but in order to do so he has to take an initiation.
- S3E37
Community Picnic
Jun 24, 196230mThe Neighborhood Community puts on a carnival in the park with different winning contests to participate in.
- S3E38
Dennis and the Witch Doctor
Jul 1, 196230mMr. Wilson is doing a magazine article on voodoo, Dennis gets the wrong idea and tells the whole neighborhood that Mr. Wilson is a Witch Doctor, Soon the whole town gets the wrong idea about Mr. Wilson.