第 1 季 共 32 集
播出时间：1959年10月5日
第 1 集 Dennis Goes to the Movies
播出时间：1959年10月5日
Dennis eludes a babysitter to go to the movies that his parents are at.
第 2 集 Dennis and the Signpost
播出时间：1959年10月12日
Dennis replaces a fallen signpost... backwards.
第 3 集 The Fishing Trip
播出时间：1959年10月19日
Henry and Mr.Wilson try to go fishing without Dennis.
第 4 集 Grandpa and Miss Cathcart
播出时间：1959年10月26日
Dennis tries to fix his Grampa Perkins up with Miss Cathcart.
第 5 集 Innocents in Space
播出时间：1959年11月2日
Mr. Wilson thinks he has discovered a space satellite.
第 6 集 Dennis' Garden
播出时间：1959年11月9日
Mr. Wilson's garden originally consisted of Dahlia bulbs. When Dennis sees them, he thinks they are ""sweet potatoes"" and after his bedtime, he ""secretly exchanges"" what is in his garden with what is in Mr. Wilson's garden. Dennis eventually raises the Dahlia bulbs & wins a 1st prize medal. After the garden judges see Mr. Wilson's garden, he is also given a medal.
第 7 集 The New Neighbors
播出时间：1959年11月16日
Dennis helps Mr Wilson sell a neighbors house.
第 8 集 Tenting Tonight
播出时间：1959年11月23日
Dennis and Tommy camp out in the back yard. Dennis' parents friends The Melton's play a record containing wild animal sounds to entertain the boys while they are camping out in the yard. Mr. Wilson can hear the record from his house and is convinced that wild animals have escaped from the circus and are after the boys so Mr. Wilson goes out to the yard to try and save Dennis and Tommy from danger.
第 9 集 Dennis Sells Bottles
播出时间：1959年11月30日
Dennis thinks his dad is broke so he sells bottles to try and help his dad out. However, when Dennis tells some of the neighbors what he is doing the neighbors get the wrong idea about the Mitchell's and think that they are in trouble financially.
第 10 集 Mr. Wilson's Award
播出时间：1959年12月7日
Dennis starts a rumor that him and his family are moving to New York only to keep Mr. Wilson in town to get his award.
第 11 集 The Christmas Story (aka Dennis & Christmas)
播出时间：1959年12月21日
Dennis is going crazy trying to find his gifts.
第 12 集 Dennis and the Cowboy
播出时间：1959年12月28日
Dennis meets Whip Crawford his cowboy idol after Mrs Webster tells Dennis he will be in the play.
第 13 集 Dennis Haunts a House
播出时间：1960年1月4日
Dennis Haunts Mr. Wilson's house due to him and his friends starting a club house in Mr. Wilson's basement.
第 14 集 Dennis' Tree House
播出时间：1960年1月11日
Mr. Wilson attempts to teach Dennis about bird watching, then Dennis takes care of a sick bird
第 15 集 Dennis and the Rare Coin
播出时间：1960年1月18日
George Wilson is looking for a rare coin. But George is in for a sad shock $250.00 (that's what he paid for the coin) But the coin is fake!
第 16 集 Dennis and the Bike
播出时间：1960年1月25日
To get a bike Dennis sells a fishbowl of beans which he has to count before 5pm!
第 17 集 Dennis and the Open House
播出时间：1960年2月8日
The Mitchell's are having a party and the guests are late, So Dennis tries to help people find the house by taking an open House for Free!
第 18 集 Dennis and the Duck
播出时间：1960年2月15日
Dennis's duck (George) causes problems for Mr. Willson who is running for The Garden Club. He tries to get the duck to the lake.
第 19 集 Dennis and the Swing
播出时间：1960年2月22日
Henry tries to take Alice out on their Anniversary. Meanwhile Dennis tries to build a swing in his yard and ends up chasing a cat up a tree in the process.
第 20 集 Dennis and the Dog
播出时间：1960年2月29日
Dennis cares for a dog named Charlie who wins a prize for his painting!
第 21 集 Mr. Wilson's Sister
播出时间：1960年3月7日
Dennis meets Helen and wants to be pirate.
第 22 集 Dennis and the TV Set
播出时间：1960年3月14日
Dennis goes to any length to get a TV and turns Mr. Wilson's tv on!
第 23 集 Dennis Creates a Hero
播出时间：1960年3月21日
Dennis asks a reporter to write a story about his dad with hopes of getting his picture in the paper.
第 24 集 Dennis' Paper Drive
播出时间：1960年4月11日
Mrs Holland tells Dennis that anyone who collets the most newspapers will win a silver dollar made in 1895 that is worth $600 which catces Mr. Wilson's eye.
第 25 集 Dennis and the Bees
播出时间：1960年4月18日
Dennis learns Opie might leave because his bees have no honey. Dennis sprays prfume on Mr. Willison's flowers.
第 26 集 Alice's Birthday
播出时间：1960年4月25日
Dennis puts a sign in Mr. Finch's store telling everybody not forget his mom's Birthday.
第 27 集 Dennis Becomes a Baby Sitter
播出时间：1960年5月2日
Dennis's parents hire a baby sitter while his parents entertain business client. Dennis is a baby sitter to Michael Bouchet, was asked to stay with Dennis.
第 28 集 Dennis and the Starlings
播出时间：1960年5月9日
Mr. Wilson has a bunch of starlings in his tree and wants to get rid of them. Dennis eventually gets rid of the starlings by putting liver in Mr. Wilson's tree which attracts a lot of cats.
第 29 集 The Party Line
播出时间：1960年5月16日
The Driscolls are new neighbors but the Driscoll's phone is on the same line as the mitchell's.
第 30 集 Dennis by Proxy
播出时间：1960年5月23日
Dennis builds a bench for Mr. Dorfamn to sit on.
第 31 集 Dennis Runs Away
播出时间：1960年5月30日
Dennis tries to walk to his Grandpa's house and the police stop him and try to figure out who he is.
第 32 集 Miss Cathcart's Sunsuit
播出时间：1960年6月13日
Dennis sells Valentine's Day cards in July to by swim fins, which end up causing a run on Valentine's day cards around the entire neighborhood.
