Milo Murphy's Law Wiki

"Spy Little Sister!"[2] is the fifteenth episode of the second season of Milo Murphy's Law.

Melissa has been reluctantly signed up with a female mentorship program "You Go, Girl!", and isn't looking forward to it. However, when she accidentally joins Savannah, the two get assigned into the "Spy Little Sister!" mentorship program instead, and have to save the science fair from a chaotic robot.


As Milo and Zack prepare for the upcoming Build-A-Bot Contest, they ask Melissa if she wants to come. She declince as her father signed her up for the female mentorship program with an elderly woman to knit and have tea. As she walks along, she sees Brick and Savannah who appear to be fighting bad guys. Melissa inspects their time limousine, however Savannah returns to the limo first and pushes Melissa in before going into the Time Stream and leaving Brick behind.

Back at Jefferson County Middle School, Doofenshmirtz is revealed to be judging the contest and gives the contestants three hours.

In the Time Stream, Savannah tries to wipe Melissa's memory but she suggests being her mentor instead. The time traveler dismisses this until Mr. Block calls and assumes Savannah is Melissa's mentor for the Spy Little Sister program, forcing her to comply. Mr. Block tells them that a robot will destroy Danville in a few hours and informs them to stop it. Melissa tells Savannah that her friends are in a robot building contest at her school and they set off.

Meanwhile, Brick is saddened about being left behind(having been left behind multiple times in his life) and runs into Melissa's original mentor and spends the day with her.

As the robot absorbs other robots, Savannah fights it and Zack tells Melissa that he and Milo used a red lightbulb from Doof's stuff. With specific knowledge, Savannah and Melissa go back in time to Milo's house before the contest to talk to Doof. They arrive but Savannah finds Doof cutting his toenails and leaves for fifteen minutes later. He tells them it was in a box he brought to the school.

They head to the school and Melissa warns her friends while Savannah gets the lightbulb, however it fuses with Savannah's phone and other projects before they secure it. They destroy it and Savannah says goodbye before retrieving Brick from Melissa's original mentor, who calls him needy after he leaves.


For a full transcript of "Spy Little Sister!", click here.



Click here to view more images from Spy Little Sister!.
The image gallery for Spy Little Sister! may be viewed here.



  • The episode may be a reference to the song, "Cry Little Sister".
  • This is the first episode to feature Mr. Block, Brick and Savannah without Cavendish and Dakota making an appearance.
  • This episode strongly references Melissa's lack of a mother figure as that's likely why Richard signed her up for the program.
  • Amanda shows jealousy when Milo gives Joni a towel to wipe her face, ending with her shaking Joni while saying 'He's mine!' showing that she has now developed a full crush on him.
  • As of this episode, all of the trio has traveled through time.


  • Phineas and Ferb:
    • The way Doofenshmirtz's boxes have the word "evil" crossed out is similar to how he crossed out the word "evil" on his science book in the Phineas and Ferb episode "Doof 101", in which he takes the role of his daughter's science teacher.
    • The newspapers featuring events that just happened is similar to the magazine in "Imperfect Storm" that is apparently trying to compete with the internet by having their stories about things that just happened.


  • At the beginning of this episode we see Milo, Zack, and Melissa all eating lunch in a cafeteria, however in "Some Like it Yacht", Principal Milder said that the school has no school lunch program. Unless they built one between seasons.


International Airings

  • Germany: September 19, 2018
  • India: November 13, 2018
  • Southeast Asia: April 1, 2019


"Field of Screams"
Episodes Next:
"Dog Walker, Runner, Screamer"

v - e - d Episodes
Season 1 Going the Extra MiloThe UndergroundersRooting for the EnemySunny Side UpThe Doctor Zone FilesThe NoteParty of PerilSmooth Opera-torWorked DayThe Wilder WestFamily VacationMurphy's LardSecrets and PiesAthledecamathalonThe SubstituteTime OutWe're Going to the ZooSchool DanceBattle of the BandsThe Math BookThe Little Engine That Couldn'tThe Llama IncidentMissing MiloStar StruckDisaster of My DreamsA Clockwork OriginPerchance to SleepwalkSome Like it YachtBackward to School NightWorld Without MiloThe RaceLove TobogganThe Island of Lost DakotasFungus Among UsMilo Murphy's Halloween Scream-A-Torium!A Christmas Peril
Season 2 The Phineas and Ferb EffectSnow Way OutTeacher FeaturePicture DayAgee Ientee DiogeeGame NightPace Makes WasteCake 'Splosion!Lady KrillersDoof's Day OutDisco Do-OverThe Ticking ClockManaging Murphy's LawMilo's ShadowSick DayField of ScreamsSpy Little Sister!Dog Walker, Runner, ScreamerNow I Am a MurphyFreefallMilo's WorldAbducting Murphy's LawThe Goulash LegacyThe Dog Who Knew Too MuchAdventure BuddiesRide Along Little DoggieLook At This ShipCast PartySafety FirstCavendish UnleashedFirst ImpressionsThe Speech and Debate League of Death and Destruction Cross Town Explosion Event‎The Mid-Afternoon Snack ClubParks and WreckEscapeMilo in SpaceSphere and Loathing in Outer Space
v - e - d Primary Story Arc Episodes
B.O.T.T. Introduction Arc The Doctor Zone FilesSmooth Opera-torWorked DayFamily VacationMurphy's LardSecrets and PiesThe SubstituteTime Out
Counteragent Arc Time OutWe're Going to the ZooSchool DanceThe Little Engine That Couldn'tStar StruckMissing Milo
Pistachions Arc The SubstituteThe Llama IncidentMissing MiloPerchance to SleepwalkThe RaceFungus Among UsThe Phineas and Ferb Effect
Doofenshmirtz Arc The Phineas and Ferb EffectAgee Ientee DiogeeCake 'Splosion!Doof's Day OutDisco Do-OverThe Ticking ClockSpy Little Sister!Milo's ShadowSick DayAbducting Murphy's LawThe Goulash Legacy
P.I.G. Arc Snow Way OutPicture DayGame NightLady KrillersDisco Do-OverManaging Murphy's LawField of ScreamsMilo's ShadowFreefallDog Walker, Runner, ScreamerAbducting Murphy's LawParks and Wreck
Octalians Arc Managing Murphy's LawMilo's ShadowSick DayAbducting Murphy's LawMilo in SpaceSphere and Loathing in Outer Space
Forsaken Perry Arc Sick DayAbducting Murphy's LawThe Dog Who Knew Too MuchAdventure Buddies
Rogue Cavendish Arc Abducting Murphy's LawLook At This ShipCavendish Unleashed
Episodes in Italics indicate an episode that doesn't center around the subject of an arc but is still related to it.
v - e - d Secondary Story Arc Episodes
Llama Incident Arc The UndergroundersRooting for the EnemyMurphy's LardWe're Going to the ZooBattle of the BandsThe Llama IncidentMissing Milo
Milo and Amanda Arc Smooth Opera-torSchool DanceCake 'Splosion!Managing Murphy's LawSpy Little Sister!Ride Along Little Doggie
Mr. Drako Arc AthledecamathalonWe're Going to the ZooSchool DanceThe Math BookSome Like it YachtBackward to School NightMilo Murphy's Halloween Scream-A-Torium!Picture Day
Just Getting Started Arc Secrets and PiesSchool DanceBattle of the BandsDisaster of My DreamsManaging Murphy's Law
Lost Dakotas Arc Backward to School NightLove TobogganThe Island of Lost DakotasThe Phineas and Ferb EffectSnow Way Out
Episodes in Italics indicate an episode that doesn't center around the subject of an arc but is still related to it.