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"Finding Mary McGuffin" is an episode of Phineas and Ferb.


When Lawrence accidentally sells Candace's doll to Doofenshmirtz, Phineas and Ferb become detectives to try and find it.


At the Flynn-Fletcher house, Lawrence and Linda are putting on a yard sale. It appears that Linda was going to sell her Lindana records but snatched them from a man who was looking at them, as well as making remarks about what happened to Lindana. Phineas and Ferb ask Lawrence if they could watch his black and white detective films. After Lawrence lets them, Heinz Doofenshmirtz appears at Lawrence's stall, buys a Mary McGuffin doll and walks off. Candace appears a minute later and asks Lawrence if he has seen her Mary McGuffin doll. Lawrence says he just sold her for a dollar and asks if Candace wants it. She screams and Lawrence offers her two dollars.

Doofenshmirtz arrives at his ex-wife Charlene's house and asks for Vanessa. Doofenshmirtz hands her the doll and talks about how he's been searching for years for the doll. Vanessa, surprised at her dad's act of love, thanks him and walks to her room to think.

Meanwhile, Phineas and Ferb are inspired by the detective films and have painted their room, as well as themselves, black and white. Candace thinks that the detective theme is perfect and tells them about her missing doll, which Phineas agrees to investigate.

At the Agency, Major Monogram is seen playing a video game. Perry is waiting for his assignment. Monogram tells him that Doofenshmirtz has been to a yard sale, bought an Inator and a box of "on-off" devices. Carl tells him that they're called "switches". Perry's chair turns is encased in a large big ball that sinks into the floor and rolls down a chute.

The boys and Candace interview Lawrence, asking him who he sold the toy to. Lawrence tries to describe Doofenshmirtz, "German accent, lab coat". Phineas considers this to be "an above average clue". When Lawrence asks Candace who her brother is talking to, she just sighs "Don't get me started."

Back in Vanessa's room, she starts thinking about the times her dad has embarrassed her and times when he has made her day. She really appreciates her gift and puts it on her shelf with her other toys. When she walks out of the room and closes the door, the doll falls near a box of donations. Soon after, Charlene answers the door and it is a man who works for Charitable Charities. Charlene asks Vanessa (who is on her laptop with headphones) where her box of junk was and she goes to Vanessa's room. She assumes that the Mary McGuffin doll is part of the junk and puts it in the box. Charlene hands the box to the man and he puts it in the truck.

The kids then go to a lab coat shop at Googolplex Mall and interrogate people there. One of the men says he doesn't know anything but then Ferb "leans" on him. He tells them there is a guy who puts all of the costs on his ex-wife's tab. He gives them the address and Phineas tells Ferb to pack up their black and white set.

Doofensmirtz is in his building and has bought lots of things from yard sales. He is trying to find a switch to fit his Inator in a whole box of them when Perry comes in. Doofenshmirtz activates the lobster trap that he got for free and tells the trapped Perry what he is doing, admitting he doesn't know what his scheme will be until he goes through the switches.

Vanessa realizes that her doll was in the box and runs after the man just as Phineas, Ferb and Candace walk up to her house. Phineas interrogates Charlene and she tells them that the doll was in the box to be sent to a Charitable Charities somewhere. The Flynn-Fletcher kids start looking around Charitable Charities outlets but can't find the Mary doll, even though Phineas and Ferb update their detective costumes to more modern (& colorful) outfits.

Back at Doofenshmirtz Evil Inc., the switches he tries are too big or too small until he comes across one that fits, save that it is "printed" upside-down. After complaining a bit, Doofenshmirtz realizes he put it upside-down and turns it around. He then turns on his invention but Perry's trap opens. Perry climbs out whilst Doofenshmirtz is still wondering why the Inator isn't switching on. He then turns around and sees the switch opening and closing the trap. He now knows why the trap was free. After a brief fight with the various items he apparently picked up at garage sales, Doofenshmirtz realizes that he can't do anything evil with a machine that just opens and closes a lobster trap so Perry can go home. Perry gives a thumbs-up to Doofenshmirtz and leaves.

Phineas, Ferb and Candace are in the last Charitable Charities shop when Candace spots Mary McGuffin. Candace grabs the doll at the same time Vanessa does. They fight over the doll, causing it to fly through the air into the hands of a young girl named Sally. She instantly loves it, and Candace decides that she's probably too old for dolls now anyway. Vanessa wonders if she should give up the one thing that proves how much her dad cares for her, then snatches it from Sally's hands, causing the younger girl to cry.

Later Vanessa is on the phone with her dad, while he's cutting a carrot. He's proud of Vanessa for committing an evil act and says that they could build on this.




  • When the lobster trap falls on Perry it opened and closed from the bottom. When Doofenshmirtz was accidentally opening and closing the trap, it opened from the top.
  • When Phineas and Ferb are talking to Vanessa's mother, Ferb's left eye (the one facing us as viewers) is bigger.
  • When Ferb packs up the interrogation scene in the Labcoat Emporium, the table and chair folds with it, yet when he packs up the interrogation scene after questioning Vanessa's mother, they remain unfolded.
  • When Doofenshmirtz said he didn't understand why the lobster trap came free with the Inator, surely he would have noticed the cable connecting the two of them when he bought it.
  • Vanessa calls the Mary McGuffin doll a "piece of plastic" ("Not So Bad A Dad") when the doll is a plush doll.


  • During the montage of Charitable Charities interviews, Phineas and Ferb are seen dressed respectively as David Starsky and Kenneth Hutchinson (Starsky and Hutch), James "Sonny" Crockett and Ricardo Tubbs (Miami Vice), and Horatio Caine and Erik Delko (CSI: Miami).
    • Phineas did Horatio Caine's sunglasses gag and the screaming where the boys are traveling on the air-boat is the same as the start of its theme tune, Won't Get Fooled Again by The Who.
  • The title and doll refers to a MacGuffin MacGuffin, a term coined by Alfred Hitchcock to describe a common item whose single, sole purpose is to drive the plot of the episode forward, either directly or indirectly. The Macguffin Doll would be a good example of said object.
  • The "Mary MacGuffin" doll may also be in reference to the popular "Cherry Merry Muffin" dolls of the 80's.
  • When Vanessa recalls her dad going "out of [his] way to catch that foul ball," they are shown in the first row along the left field side at a baseball game, robbing a player in white with a blue hat and sleeves from making a catch in foul ground. This is a clear reference to the Bartman play in Game 6 of the Cubs/Marlins 2003 NLCS series.
  • The music when Phineas and Ferb visited the first Charitable Charities location, the music sounded familiar to the song Racetrack 3000 by The Swivelheadz.


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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