If Person A manufactured a poison, and it was given to somebody else by Person B, without Person A's knowledge, what could Person A be charged with?
I am writing a novel for NaNoWriMo and I have set up this situation as a driving force for the mystery. I am just unsure what crime the police could charge Person A with (if not murder, which they suspect he committed).
My first instinct was involuntary manslaughter, but it doesn't seem to fit correctly, and I am unsure how to proceed, as my background is not in law.