Dark raven flies low...
Ah, dear friend, such a pleasure to hear your charming voice! You seem to be confused, however, so allow me to alleviate your predicament. I am in no way related to the army, even more so to lieutenant Dark, and clearly I am not his deputy. Also I believe none of us died yet. By us I mean the four narrators as you might have surmised. Oh and before we part ways yet again, the witch has kindly asked me to deliver you a message of sorts, an advice to ease your struggles.
She said READ. CAREFULLY.
By the way, the murder method you presented will also be a matter of doubt in the future, The bodies were in a rather gruesome state when they were found, moreover, two people died at once. It is true that Jester only kept watch from one side, but It wouldn't be possible to commit the murder by ways you described (and any similar ways), without people on the Blackfeather street noticing. It would take too much time and attract too much attention.