SWAPPED [alphabet lore]

A eventful evening.

F & N are sitting down talking and just having fun, they both hear a bang and decide to check it out. They see P dead on the floor, shot. "Who could have done this?..." N said looking at the body.

"I think I know who." F replying to N. They look for the other letters and it took a while. But finally, they found one! It was R.

"Oh. Hi, guys" R said. "Have you seen P? I can't find her anywhere R said. " She's... Deceased." F said. "wait WHAT." R said "WHAT HAPPENED" "It was a murder. Someone killed her." F replied. "The body was right in front of our cave." "Wait!" Said N "I see a note right here, it says-

"ᵂᵉˡˡ ᶠ ᵃⁿᵈ ᴺ ʸᵒᵘ ᵗʰᵒᵘᵍʰᵗ ʸᵒᵘ ᶜᵒᵘˡᵈ ᵉˢᶜᵃᵖᵉ ᵘˢ? ʸᵒᵘ ᵗʰᵒᵘᵍʰᵗ ʸᵒᵘ ᶜᵒᵘˡᵈ ʲᵘˢᵗ ʰᵃᵛᵉ ᵃ ᵍᵒᵒᵈ ᵉⁿᵈⁱⁿᵍ? ᵂᵉˡˡ ⁿᵒ, ʷᵉ ˡᵉᶠᵗ ᴾ'ˢ ᵇᵒᵈʸ ᵒᵘᵗˢⁱᵈᵉ ᵒᶠ ʸᵒᵘʳ ᶜᵃᵛᵉ ʲᵘˢᵗ ᶠᵒʳ ᵃ ˡⁱᵗᵗˡᵉ ʷᵃʳⁿⁱⁿᵍ. ˢᵒ ᵇᵉʷᵃʳᵉ you ᵗʷᵒ. ᴹᵃⁱⁿˡʸ ʸᴼᵁ ᴺ"

"Who wrote that?" R said. "I don't know." N said. "It's L." F said while realizing "How do you know?" R said. "I recognize his hand writing." F replied. "What do we do?" N said. "I don't know" F said