Inspired by a puzzle posted not that long ago.
A man was killed in an office. We have five suspects:
Isaac - takes care of trash in the company
Caleb - he once stole two dollars from a colleague's cabinet
Nathan - was once caught torrenting at work
David - takes care of IT stuff (he's a weirdo, by the way)
Gabriel - well, picked just to have five suspects
As you can clearly see, their roles doesn't matter. What matters is the note that was found on the crime scene:
So, who killed him?
I'm giving a hint:
Nothing separates the letters.
IISAC thing hint:
If I took the letters, and rearranged them a bit...