Disclaimer: I do not own Criminal Minds and intend no copyright infringement.
"Don't shoot! Don't shoot!", Rossi yelled in the middle of this tumult. Arms spread wide, he stepped between the agents and the attacker as soon as he knew that Morgan's attempt to gain control was in vain. "You're not the killer, right? You didn't kill and wound so many people with this gun, did you? Your voice is wavering, your hands are shaking… You're not the same person that aimed at me cold-bloodedly while I was refueling my car."
"I'm just an accountant", the man whimpered, nevertheless holding tight to the weapon. " I never meant to do any harm. Henry had hired me to work for this man – at least I think it's a man. I never saw him, never heard his name. Henry called him "man in the back". He only contacted me via e-mail. I swear I didn't know what he was doing! I mean – okay – I knew there was something fishy going on with me not knowing my bosses' name, but murder?"
"But eventually you found out, didn't you?", Rossi inquired calmly.
"Only recently! Oh, I can't go to prison for this, I just can't. I didn't know what he was doing!", he insisted.
"You discovered that you were working for someone who somehow made a profit of killing St. Francis' patients", Reid chipped in.
The accountant nodded vigorously. "The man in the back sold organs. Through the surgeon he had all the necessary data and when a customer showed up he chose a fitting patient which the nurse killed. The mortician offered the relatives a low-cost cremation and thus all evidence vanished into thin air. Henry organized the money laundering."
"Why are you here?", the young doctor asked.
"I know Henry since college. He always makes backups. I'm sure he somehow documented everything he was doing for the man in the back. When I learned that the surgeon and all the others were dead and Henry injured… The backups must be hidden around here somewhere. I just wanted to delete my name…"
At this very moment, Hotchner's cell phone rang. The attacker was so nervous, he literally jumped at the unexpected sound out of nowhere. This time Morgan didn't miss his chance. He overwhelmed the man in a second.