[[ButtMonkey Tired of being treated like crap by the hands of Light, Misa, L, Soichiro, and Aizawa]], Matsuda has decided to do something to prove himself of being useful.

While trying to help Misa with film shooting, he abandons her so he can sneak into Yotsuba. At the same time, the Kira Task Force are having a problem with a detective named Eraldo Coil who is hired by Yotsuba to find L. It turns out L is ''really'' Coil. He tells the team not to tell this to anyone.

As Matsuda sneaks in, he eavesdrops on the meeting by the door. Soon, this door opens up, showing his presence. He is in big trouble. Watari contacts L about this, forcing the latter to change his plans for the investigation.
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!!Tropes used in this episode:
* ADayInTheLimelight: For Matsuda.
* CovertPervert: L had cameras installed everywhere even the bathroom to which Matsuda escaped the party to make his call.
* DestinationDefenestration: Matsuda does this deliberately to fake his death.
* EasilyOverheardConversation: Two of the Yotsuba members are talking about the secret meetings in plain sight. Matsuda overhears them, and follows them to the conference room.
** {{Averted}} seconds later: Matsuda can only hear a few fragments of the conversation from outside the conference room. However, he still hears enough to confirm Yotsuba's connection with Kira; see ExactEavesdropping below.
* ExactEavesdropping: Matsuda knows what time period the Yotsuba Kira is active, so he has pretty good luck: He starts eavesdropping on the meeting right when they're discussing who to kill.
* ExactWords: Matsuda tells the Yotsuba group that he's Misa's manager, which is true. He just doesn't tell them that's not his real reason for being there.
* FakingTheDead: Matsuda, to escape Yotsuba Kira.
* InnerMonologue: Matsuda gets quite a lot as he infiltrates Yotsuba, then tries to XanatosSpeedChess his way out of the situation.
* HiredToHuntYourself: Yotsuba hires Eraldo Coil, the world's second best detective, to discover L's identity. However both Coil and the world's ''third'' best detective are fake identities created by L to mislead those who try to figure out who he is.
-->'''L:''' I've found that people who try to find me usually fall for this.
* HoneyTrap: L sends Misa and the girl's from her acting agency to distract the Yotsuba eight.
* HowMuchDidYouHear: The Yotsuba members ultimately decide this doesn't matter. They want to kill Matsuda regardless, just in case he heard something.
* IWasJustJoking: Hatori said this after he says out loud of leaving Yotsuba. This doesn't spare his life, though.
-->'''Hatori''': No, wait! I was only joking! It's not like that!
* LeeroyJenkins: Matsuda goes charging into Yotsuba without a plan. He actually meets with a certain amount of success, finding out where the secret meeting is taking place and narrowing the list of suspects from hundreds to eight.
* MundaneMadeAwesome: This episode features epic shots of ''toilet paper'' accompanied by OminousLatinChanting.
* NervesOfSteel: Matsuda handles a very tight situation without showing fear or even breaking character.
* NothingCanStopUsNow: Matsuda is ecstatic about getting the evidence on Yotsuba... then the door falls open and he tumbles right into the conference room.
* PlayingDrunk: Matsuda fakes being drunk in order to fall out the window.
* RefugeInAudacity: Matsuda escapes being killed by pretending to die in front of the people who want to kill him.
* RevealingCoverup: L notes that if Matsuda dies, it will only serve as solid proof of Yotsuba's guilt.
* ScrewThisImOuttaHere: Hatori attempts on doing this. This is what got him killed.
* SickeningCrunch: Invoked when Soichiro catches Matsuda with a mattress, and then throws a bag off the balcony to make it sound like he hit the ground.
* SpySpeak: Between L and Matsuda when the Yotsuba members are monitoring his call.
* TheGuardsMustBeCrazy: Matsuda sneaks right past the Yotsuba security guard.
* XanatosSpeedChess: Matsuda, of all people, plays one fast game when he gets caught. He comes up with a believable reason for being there, stalls for time, and manages to keep the ball rolling until he's in a situation where he can get in contact with L.
* YouAreAlreadyDead: Higuchi informs Hatori that he's going to end up dead after his outburst. Hatori tries to backtrack, but it's too late.
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