It's a crazy story - another tv series in itself! I can't believe there hasn't been one already. The guy was advising the FBI - for many years. Before Ivins, they had another suspect - also a scientist. It's still not conclusive it was Ivins - but seems likely it leaked via a science expert working at Fort Detrick - who was motivated by some twisted idea of the 'common-good'.

Apparently the note was one of the give-aways - it does read like it was made up.