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You hear that? Even in England my brothers have some scheme planned.
Candace Flynn

"Elementary My Dear Stacy" is the second half of the 4th episode of the 2nd season of the American television series Phineas and Ferb. It originally aired on Disney Channel on May 15, 2009 and on Disney XD on February 28, 2009 in the United States.


While in London, Candace and Stacy emulate Sherlock Holmes and Dr. Watson, while trying to bust Phineas and Ferb. Meanwhile, Perry must team up with British agent Double-0 0 in order to stop Dr. Doofenshmirtz from moving Big Ben to the Tri-State Area.


Candace and Stacy get off the water slide.

Still on vacation in London, the Flynn-Fletcher family is joined by Stacy. She and Candace stay up all night reading Sherlock Holmes stories, even though they originally mocked reading as something people did "before they invented fun." The next morning, the adults take Phineas and Ferb along with Candace and Stacy to see the London Eye, a giant Ferris wheel.

Once the family leaves, Perry opens the face to the grandfather clock and zips down a chute into a comfortable arm chair, in what appears to be his lair while he is in London. After Agent P's last mission in London, the Agency ran into some trouble with the British Spy Union. So, he is assigned a partner for today's mission, Agent Double 0-0.

Grandpa Fletcher and Lawrence drop the rest of the family off at the London Eye and head off to the International Haggis Festival. Once there, Linda and Grandma Fletcher head off to explore downtown London, leaving the kids to wait in line for the ride by themselves. They split up further into 2 groups, with Phineas and Ferb together and Candace and Stacy together.

Candace figures that her brothers have some scheme planned even though they are in London. She believes that she might finally be able to bust them if she uses Holmes' method of deduction. Even though Stacy would rather go shopping, she agrees to help her friend and takes on the role of Dr. Watson.

After trying to squeeze into Perry's hover car, the two spies take Agent Double 0-0's car. The British agent explains all the gadgets that his car is equipped with, and Perry inadvertently hits the ejector seat button, propelling Agent Double 0-0 out of the car. Once back inside, he asks Perry if he thought it was funny.

Candace and Stacy acting as Sherlock Holmes and Dr. Watson respectively to find out what Phineas and Ferb are doing.

Candace and Stacy are walking through downtown London and Candace has bought a deerstalker hat and cape just like Sherlock Holmes usually wears, while Stacy has a bowler hat like that of Dr. Watson. Stacy gets distracted by window shopping in all the stores. Candace sees her brothers walk into an auto supply store and starts making several outrageous leaps in illogical thought as to what they could be doing.

The two agents arrive at Dr. Doofenshmirtz's London lair underneath Big Ben. After making fun of Agent Double 0-0's name, Doofenshmirtz reveals his plan to launch Big Ben into orbit and land it outside Doofenshmirtz Evil Incorporated's main building so that he doesn't have to look at his tiny watch. Agent Double 0-0 ridicules Doofenshmirtz's plan, saying that he could just buy a bigger watch or a wall clock. The scientist feels launching the famous landmark into space is easier than going into a store and picking one of those out.

After talking to the auto supply store manager, Candace and Stacy follow the boys' trail out back to find that they've picked up the free tires the store was offering. After chasing them around town and pulling Stacy out of several stores, Candace is close to figuring it out.

The boys drop a notebook while getting into a cab, and the girls pick it up. Half the page is missing, but it reads, "To Big Race 1600 Water S." Candace deduces that they must be planning a big race at 1600 Water St. She calls her mom, but arrives at the address only to find the building is abandoned and Phineas and Ferb are nowhere to be found. She then remembers an old Holmes trick to use pencil lead to reveal impressions left on a piece of paper. Candace tries this and it reveals the note to read, "To Do Today: Big Ben Race To Thames 1600 for Water Slide Fun."

Agent Double 0-0 slowly tries to escape.

Agent Double 0-0 is using his watch laser to open his and Agent P's traps. Since it is taking so long, Perry figures out that he can throw a nearby brick on the remote control and release the trap. Once free, Agent Double 0-0 climbs up through the inner workings of Big Ben to go undetected and surprise Doofenshmirtz. Agent P decides to take the elevator instead.

The girls arrive at Big Ben and find that Candace was right. They were making a water slide at Big Ben. It loops around the clock tower and the finish fires them off into the London Eye. As Phineas and Candace are discussing her method of deduction, the lift comes down and brings her up to the top and she is launched into the slide while she is on the phone to Linda. Stacy decides to voluntarily ride the slide, and Phineas hops on as the last customer of the day. They all land safely in the Ferris wheel.

Across the River Thames, Big Ben is starting to soar into the sky with the slide still wrapped around it. Stacy sees this and tries to show this to Candace, but ignores Stacy to see Linda coming. Doofenshmirtz is at the top of the tower basking in the glow of his success when Perry leaps up and knocks the remote for the rocket out of his hand and knocks the evil genius down the slide. All the stress on the structure breaks the slide apart and it falls into the river. Perry pushes the button and the clock tower floats back into place just in time for Linda not to see any of it. While returning home and seeing the girls, Ferb says he'll never understand fashion.

End credits

At 7:45 PM inside Big Ben, Double-0 0 is still trying to reach the ladder from the pendulum. He then manages to get out through a door under the hands of the Big Ben and looks at his clock to find out how much time he has been in there, but complains about his watch being too small.



  • Even though it seems to take place during the same vacation to England as "A Hard Day's Knight", Stacy was not with the family in that episode.
  • When Stacy points to Candace that Phineas and Ferb have borrowed tires from the auto parts store, the sign says "Free Tires". The episode is set in the UK, therefore it should say the British spelling "tyres" making the sign say "Free Tyres". However, the US spelling is probably used to avoid confusion.
  • The London Eye stops in the episode, but in real life the London Eye never stops rotating.
  • When Candace is deducing the message, she says "Fun" before she finds the impression.
  • Phineas and Ferb open the door of the London Eye to get to the ground, but when they walk off-screen, the door is closed.
  • Ferb's mouth doesn't move when he begins to talk before walking off-screen.
  • Agent Double 0-0's watch laser makes a hole in his trousers, which disappears in the next scene and for the rest of the episode.
  • When Big Ben returns to its launch pad, the time does not display 4:15.


  • Based on Monogram's dialogue, this episode takes place immediately after "A Hard Day's Knight".
  • This is the first episode where the Perry the Platypus side plot has a character with dialogue other than Doofenshmirtz, Monogram or Carl (Agent 0-0).
  • During the sunrise scene, the opening music of Peggle can be heard.
  • There are references to the Sherlock Holmes novel series:
    • Candace imitates Sherlock Holmes during this episode, including wearing the clothing most commonly associated with Sherlock Holmes: the deerstalker hat and cape featured in Sydney Paget's illustrations for Strand Magazine.
    • Candace designates Stacy as Watson, Sherlock Holmes' most trusted companion, who has helped him in all of his most fascinating cases.
    • The episode title comes from the famous phrase "Elementary, my dear Watson." However, it was not actually said by Sherlock Holmes in any of the Sir Arthur Conan Doyle works. The line was either first said in the 1929 movie The Return of Sherlock Holmes or in the 1899 stage production Sherlock Holmes.
    • Someone dressed as Dr. Watson is seen going up an escalator.
  • There are also references to James Bond in the side-plot:
    • Agent Double 0-0 is a very direct parody of James Bond.
    • Inspector Initials is a parody of Bond's boss, M, as portrayed by Dame Judi Dench in at least seven Bond films. (Eight, if you include a prerecorded cameo in the beginning of Spectre).
    • Double 0-0's laser watch is similar to many gadgets that Bond has been equipped with over the years, most directly the laser watch featured in 1995's GoldenEye.
    • The ejection seat on Double 0-0's Aston Martin is borrowed from Goldfinger.
    • When Perry and Agent Double 0-0 are captured by Dr. Doofenshmirtz, they are under the ejection port of the Big Ben rocket, just like James Bond and Dr. Holly Goodhead were in Moonraker.
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Animated Productions: Phineas and FerbVideographyTake Two with Phineas and FerbPhineas and Ferb the Movie: Across the 2nd DimensionPhineas and Ferb the Movie: Candace Against the UniverseChibi Tiny Tales

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Major Characters: Phineas FlynnFerb FletcherCandace FlynnPerryDr. Heinz Doofenshmirtz

Secondary Characters: Linda Flynn-FletcherLawrence FletcherIsabella Garcia-ShapiroBaljeet TjinderBuford Van StommMajor Francis MonogramJeremy JohnsonCarl KarlStacy HiranoGinger HiranoMillyKatieHollyAdyson SweetwaterGretchenVanessa Doofenshmirtz
Recurring characters: Giant Floating Baby HeadDjango BrownColtraneCharlene DoofenshmirtzRoger DoofenshmirtzVivian Garcia-ShapiroIrvingJenny BrownSuzy Johnson Nana Shapiro• • DannyBobbi FabulousShermanMeapMitchNormClyde FlynnBetty Jo FlynnPinkyAlbertPeterKlimpaloonTalking ZebraMonty MonogramHildegard JohnsonReginald FletcherWinifred FletcherAloyse von Roddenstein
Minor Characters: JerryBigfootYetiKhaka Peu PeuThe RegurgitatorBob WebberPrincess BaldegundeMelissaUnnamed Fireside GirlsAgent EBrobotsDrill SergeantBuck BuckersonTiana WebberJack JohnsonMrs. JohnsonWendyEliza FletcherNicoletteMandyThaddeus and ThorMindyAmandaLucy FletcherAdrian FletcherBeppo BrownDr. HiranoAnnabelle JohnsonSaraBrigitte, Josette, and ColletteMishti PatelLiam McCrackenRodrigoMorgGlenda WilkinsDr. GevaarlijkHeinz Doofenshmirtz's motherBlanca DishonProfessor PoofenplotzEliza M. FeyersiedLyla LolliberryBalloony • Corn Colossus • Professor Parenthesis
Guest Characters: Santa ClausKim Possible PinocchioBaby BaboonThor OdinsonSpider-ManHulkIron ManRed SkullNick FuryVenomWhiplashMODOK

Season One: "Rollercoaster" • "Candace Loses Her Head" • "The Fast and the Phineas" • "Lawn Gnome Beach Party of Terror" • "The Magnificent Few" • "S'Winter" • "Are You My Mummy?" • "Flop Starz" • "Raging Bully" • "Lights, Candace, Action!" • "Get That Bigfoot Outta My Face!" • "Tree to Get Ready" • "It's About Time!" • "Jerk De Soleil" • "Toy to the World" • "One Good Scare Ought to Do It!" • "A Hard Day's Knight" • "I, Brobot" • "Mom's Birthday" • "Journey to the Center of Candace" • "Run Away Runway" • "I Scream, You Scream" • "It's a Mud, Mud, Mud, Mud World" • "The Ballad of Badbeard" • "Dude, We're Getting the Band Back Together" • "Ready for the Bettys" • "The Flying Fishmonger" • "Phineas and Ferb Get Busted!" • "Greece Lightning" • "Leave the Busting to Us!" • "Crack That Whip" • "The Best Lazy Day Ever" • "Boyfriend From 27,000 B.C." • "Voyage to the Bottom of Buford" • "Put That Putter Away" • "Does This Duckbill Make Me Look Fat?" • "Traffic Cam Caper" • "Bowl-R-Ama Drama" • "The Monster of Phineas-n-Ferbenstein" • "Oil on Candace" • "Unfair Science Fair" • "Unfair Science Fair Redux (Another Story)" • "Out to Launch" • "Got Game?" • "Comet Kermillian" • "Out of Toon" • "Hail Doofania!"

Season Two: "The Lake Nose Monster" • "Interview With a Platypus" • "Tip of the Day" • "Attack of the 50 Foot Sister" • "Backyard Aquarium" • "Day of the Living Gelatin" • "Elementary My Dear Stacy" • "Don't Even Blink" • "Chez Platypus" • "Perry Lays an Egg" • "Gaming the System" • "The Chronicles of Meap" • "Thaddeus and Thor" • "De Plane! De Plane!" • "Let's Take a Quiz" • "At the Car Wash" • "Oh, There You Are, Perry" • "Swiss Family Phineas" • "Hide and Seek" • "That Sinking Feeling" • "The Baljeatles" • "Vanessassary Roughness" • "No More Bunny Business" • "Spa Day" • "Phineas and Ferb's Quantum Boogaloo" • "Phineas and Ferb Musical Cliptastic Countdown" • "Bubble Boys" • "Isabella and the Temple of Sap" • "Cheer Up Candace" • "Fireside Girl Jamboree" • "The Bully Code" • "Finding Mary McGuffin" • "Picture This" • "Nerdy Dancin'" • "What Do It Do?" • "Atlantis" • "Phineas and Ferb Christmas Vacation!" • "Just Passing Through" • "Candace's Big Day" • "I Was a Middle Aged Robot" • "Suddenly Suzy" • "Undercover Carl" • "Hip Hip Parade" • "Invasion of the Ferb Snatchers" • "Ain't No Kiddie Ride" • "Not Phineas and Ferb" • "Phineas and Ferb-Busters!" • "The Lizard Whisperer" • "Robot Rodeo" • "The Beak" • "She's the Mayor" • "The Lemonade Stand" • "Phineas and Ferb Hawaiian Vacation" • "Summer Belongs to You!" • "Nerds of a Feather" • "Wizard of Odd" • "We Call it Maze" • "Ladies and Gentlemen, Meet Max Modem!" • "The Secret of Success" • "The Doof Side of the Moon" • "Split Personality" • "Brain Drain" • "Rollercoaster: The Musical!" • "Make Play" • "Candace Gets Busted"
Season Three: "The Great Indoors" • "Canderemy" • "Run, Candace, Run" • "Last Train to Bustville" • "Phineas' Birthday Clip-O-Rama!" • "The Belly of the Beast" • "Moon Farm" • "Ask a Foolish Question" • "Misperceived Monotreme" • "Candace Disconnected" • "Magic Carpet Ride" • "Bad Hair Day" • "Meatloaf Surprise" • "Phineas and Ferb Interrupted" • "A Real Boy" • "Mommy Can You Hear Me?" • "Road Trip" • "Tour de Ferb" • "Skiddley Whiffers" • "My Fair Goalie" • "Bullseye!" • "That's the Spirit" • "The Curse of Candace" • "Escape from Phineas Tower" • "Lotsa Latkes" • "Ferb Latin" • "A Phineas and Ferb Family Christmas" • "Tri-Stone Area" • "Doof Dynasty" • "Excaliferb" • "Phineas and Ferb and the Temple of Juatchadoon" • "Monster from the Id" • "Gi-Ants" • "The Remains of the Platypus" • "Mom's in the House" • "Perry the Actorpus" • "Let's Bounce" • "Bully Bromance Break Up" • "Quietest Day Ever" • "Doonkleberry Imperative" • "Meapless in Seattle" • "Delivery of Destiny" • "Buford Confidential" • "The Mom Attractor" • "Cranius Maximus" • "Agent Doof" • "Minor Monogram" • "What a Croc!" • "Sleepwalk Surprise" • "Sci-Fi Pie Fly" • "Sipping with the Enemy" • "Tri-State Treasure: Boot of Secrets" • "Doofapus" • "Norm Unleashed" • "Where's Perry?" • "Ferb TV" • "When Worlds Collide" • "What'd I Miss?" • "Road to Danville" • "This is Your Backstory" • "Blackout!"
Season Four: "For Your Ice Only " • "Happy New Year!" • "Fly On the Wall" • "Bully Bust" • "My Sweet Ride" • "Der Kinderlumper" • "Sidetracked" • "Primal Perry" • "Mind Share" • "Backyard Hodge Podge" • "Bee Day" • "Bee Story" • "Great Balls of Water" • "Where's Pinky?" • "Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne" • "Knot My Problem" • "Just Desserts" • "La Candace-Cabra" • "Happy Birthday, Isabella" • "Love at First Byte" • "One Good Turn" • "Mission Marvel" • "Thanks But No Thanks" • "Troy Story" • "Druselsteinoween" • "Terrifying Tri-State Trilogy of Terror" • "Face Your Fear" • "Cheers for Fears" • "Steampunx" • "Just Our Luck" • "Return Policy" • "Live and Let Drive" • "Phineas and Ferb Save Summer" • "Father's Day" • "Imperfect Storm" • "The Return of the Rogue Rabbit" • "It's No Picnic" • "The Klimpaloon Ultimatum" • "Operation Crumb Cake" • "Mandace" • "Phineas and Ferb: Star Wars" • "Lost in Danville" • "The Inator Method" • "Night of the Living Pharmacists" • "Tales from the Resistance: Back to the 2nd Dimension" • "Doof 101" • "Act Your Age" • "Last Day of Summer" • "O.W.C.A. Files"

Locations at or near Danville: DanvilleSeattleMr. Slushy FranchiseDoofenshmirtz Evil IncorporatedFlynn-Fletcher HouseAtlantisGoogolplex MallOld Abandoned Amusement Park

Other: AfricaEnglandNew York CityBig BenMarsTokyoLondonChinaIndiaCanadaChileHawaii

Today is Gonna Be a Great DaySummer Belongs to YouCity of LoveJump Right InPerry the Platypus ThemePerry Saves ChristmasLet it Snow, Let it Snow, Let it SnowGitchee Gitchee GooWhere Did We Go Wrong?BustedLittle BrothersWhat'cha Doin?Carpe DiemS.I.M.P. (Squirrels In My Pants)I'm MeRollercoasterCouldn't Kick My Way Into Her HeartThe Ballad of KlimpaloonEvil for Extra CreditBackyard BeachHappy New YearGreat to Be a BabyWhat Might Have BeenSerious FunCurtain Call/Time Spent TogetherFollow the SunSilhouettes