Baffle Dust blueprints.
Ethical Experimentation is a written note found in The Brigmore Witches.
Transcript[]
I've managed to get my hands on an experimental formula being tested right here in Coldridge Prison. A mixture the prison guards call chokedust, which is normally capable of rendering prisoners vulnerable for a few moments. However, this new formula has the potential to make the victim forgetful as well. It's as if, once breathed in, the dust causes an acute temporary stupor.
Location[]
It can be found in Coldridge Prison in cell A25 during the mission A Stay of Execution for Lizzy.