(Very minor Ace Attorney spoilers ahead. Familiarity with the source material is expected, but we won't necessarily be adhering rigidly to canon.)

Turnabout Threesome

Detective Dick Gumshoe checked his watch as he stood outside the door to the Wright & Co Law Offices. In his hand he held an unmarked brown envelope which the detective had requested he obtain. C'mon Phoenix... don't keep me waiting...

A noise from inside the office made his blood run cold. It sounded like someone collapsing to the floor! As he scrambled for his weapon, he heard a pitiful moan which could only have come from Mr Phoenix Wright himself, followed by an indistinct female voice. Then a loud noise: the breaking of bone! He'd recognise that sound anywhere!

Gumshoe slammed his whole weight against the door, but it didn't budge. He tried again - nothing. He tried again, and this time the door came free of its hinges, collapsing inward. Without waiting a second longer, the good detective burst into the room. "FREEZE! You're under... uh..."

His face turned a deep, deep red as he took in the situation before him. Mr Wright lay on the floor, his face pressed into the carpet. Behind him, a figure was on his knees: Prosecutor Edgeworth. And sitting on the desk, her foot on Phoenix's head, whip in hand, was none other than Franziska Von Karma.

And none of them were wearing clothes.

"Uh... I, uh..." Gumshoe mumbled. "I'm sorry, I didn't realise..."

"Didn't realise what? Out with it!" Franziska cracked her whip at the detective.

"Ow! Uh... that the three of you were... I'll just come back later."

"Dmmfmfm Gmmshmm! Wmmhh!" Phoenix said, into the carpet.

"Eh?"

"Fool. I'll give you ten seconds." Franziska lifted her foot.

"Detective Gumshoe? Why are you here?" asked Phoenix.

"Um... pal, you sent me a text asking for this-" he held aloft the envelope, "-but I can see this isn't a good... OW!"

"Give it here!" von Karma barked, jumping down from the desk. She strutted across to Gumshoe and seized the envelope, tearing it open. "Hmm... as I thought. It's an updated autopsy report for tomorrow's case."

"Really?" Phoenix rose onto his elbows. "What does it say?"

"As if I'd tell you!" Franziska laughed. "This is coming with me. Well, boys, it's been fun, but-"

"Now, hold on!" Gumshoe held out a hand, but swiftly retracted it as von Karma's naked form advanced on him. "I still don't know what's going on here! If this... well, what is this? Why are you- OW! Can you put that thing down?"

"I'd sooner put down my cat than my whip! Anyway, isn't it obvious? We're just blowing off some steam before court tomorrow, and the boys wanted my help to-"

OBJECTION!

Phoenix got to his feet. "Franziska, you're claiming that we asked you to 'help us?'"

"Of course! Is that not what happened? Or do you have evidence otherwise?"

Gumshoe gingerly scratched the back of his neck. "Uh... maybe I oughta- OWOWOW!"

"Don't you DARE walk out of here, Detective!" von Karma held the whip over her head. "You're a valuable witness!"

"Ahem." Edgeworth spoke for the first time. "Detective Gumshoe is of no use in establishing who initiated the encounter, since he was at the time collecting the autopsy report. You do have an alibi, don't you, Detective?"

"Hey- are you accusing me of voyeurism, Mr Edgeworth?" Gumshoe blushed an even deeper shade of red. "Of course! The clerk at the coroner saw- Owowowow!"

"Foolish fools foolishly wasting my time!" von Karma struck Edgeworth with the whip. "Mr Phoenix Wright! Have you any evidence that it was I who, as Edgeworth put it, 'initiated the encounter'?"

"As a matter of fact, I do." Phoenix grinned. "The evidence is right... HERE!"

...

"... Phoenix, that's your badge."

"Oh, sorry. I mean...HERE!"

von Karma leaned forward. "As much as I admire Prosecutor Edgeworth's cock, I can't see what point you're making."

"It's simple!" Phoenix ran a hand along Edgeworth's member, causing his breath to catch. "What matters isn't the cock itself, but what we find on it. Franziska! You know what a condom is, don't you?"

"Yes, of course, but... ah-"

"You see now?" Phoenix turned to Edgeworth. "Miles, who provided this condom to you?"

"Witness! You don't-"

Edgeworth slammed his hands on the desk. "It was you, Franziska! You gave me this condom! You knew ahead of time you wanted us to have sex, and you brought protection!"

"Ach!"

Gumshoe tugged at his collar. "Look, guys, I really should be-" He flinched as von Karma reached for her whip. "Alright, alright, I'll stay!"

(I have more setup, but DPP posting limits have kicked in. See comment.)