History Recap / MyLittlePonyFriendshipIsMagicS5E16RarityInvestigates

* DistractedByTheSexy: Rarity uses her looks to manipulate male ponies again.

-->'''Sassy Saddles''': Rarity, you could sweet talk a filly out of candy.

* HappyDance : Rainbow does it twice, when knowing she'll fly with the Wonderbolts. She does a complete dance the first time, with Rarity telling Soarin to let her enjoy the moment; the second time, the dance is cut short since it was already time for the Wonderbolts' performance.
* HumbleHero : Surprisingly, Rainbow Dash plays this role to an extent, as she downplays her own achievements while praising the Wonderbolts'. Rarity even tells her to 'don't be so modest'.

* IWouldSayIfICouldSay: Cinnamon Chai can't identify the customer who bought a particular cake...because the customer was almost completely covered in clothes.

* JabbaTableManners: Rainbow gobbles food from her plate during the dinner at Canterlot Castle, not even bothering to land first.

* LaserGuidedKarma: Wind Rider tried to get Rainbow Dash kicked out of the Wonderbolts out of fear she'd break his record. In the end it's him, despite being a retired veteran Wonderbolt, that's kicked out for his FrameUp, with Rainbow flying in his slot.
** More subtly, with Rainbow coming back for the show on time after that was declared impossible, it's likely she did break his record (for long distance flying) doing it.
** Also, if counting when Spitfire booted Lightning Dust out of the Wonderbolt Academy due to her lack of respect for her fellow ponies, Wind Rider is the second pony that Spitfire has dishonorably discharged from the Wonderbolts due to their dishonorable actions.

* LiteralMetaphor: "Rainbow Dash was obviously upset, but I had all my ducks in a row!" ''(an orderly trio of ducklings crosses the screen)'' "...except one." ''(a fourth duckling rushes to catch up with the others, trips, and falls into a rain puddle)''

** The episode title is a take-off on ''Poirot Investigates'', a collection of HerculePoirot mysteries by AgathaChristie.

* InsigniaRipOffRitual: Spitfire rips off Wind Rider's old Wonderbolt insignia from his jacket when she denounces him and effectively strips him of any ex-Wonderbolt pensions/benefits.

-->'''Rainbow Dash:''' "''Trust'' you?? You spent more time changing clothes than trying to help me!"

-->'''Sassy Saddles''': "Rarity, you could sweet talk a filly out of candy."

-->'''Rainbow Dash:''' ''Trust'' you?? You spent more time changing clothes than trying to help me!

-->'''Sassy Saddles''': You could charm a filly out of their candy.

* ChangingClothesIsAFreeAction: {{Invoked}} by Rarity who keeps rapidly changing outfits. Rainbow Dash later [[DefiedTrope contradicts]] her though.

** Rainbow Dash believing that she may have caused the crime in her sleep brings to mind when Light Yagami suggests he may have been subconsciously killing people in ''Anime/DeathNote''.

* OohMeAccentsSlipping: Ashleigh Ball sounds quite Canadian when Rainbow spills a drink on Rarity's dress and says "Sorry about that."

* TheGuardsMustBeCrazy: What kind of guard accepts a chocolate cake while on duty?

* ItsAllAboutMe: Wind Rider framed Rainbow Dash and ruined her life all so she couldn't break his academy record.

* WhatTheHellHero:
** Subverted. Rainbow Dash questions why Rarity is seemingly doing nothing to help her, but it is revealed that she was solving the mystery the whole time in an unorthodox manner.
** Played straight wit Wind Rider using dirty tactics to keep his record even if this might ruin Rainbow's career.

* WhatTheHellHero: Subverted. Rainbow Dash questions why Rarity is seemingly doing nothing to help her, but it is revealed that she was solving the mystery the whole time in an unorthodox manner.

* ContinuityNod: Sassy Saddles reappears at Canterlot Carousel.

* {{DistractedByTheSexy}}: Rarity uses her looks to manipulate male ponies again.

* RaceAgainstTheClock: Rainbow Dash has until the start of the show to prove her innocence, or else she'll be permanently banned from the Wonderbolts.

* BrokenPedestal: Needless to say, after Wind Rider admits he framed Rainbow, she loses all the respect she had for him. Rainbow also had no problem with Wind Rider getting kicked out of the Wonderbolts for good.

* LaserGuidedKarma: Wind Rider tried to get Rainbow Dash kicked out of the Wonderbolts out of fear she'd break his record. In the end it's him that's kicked out for his FrameUp, with Rainbow flying in his slot.