This is the intro for the custom adventure that Keith Baker will be running at this year's Mythic Party, aka MP3:
"You are one of the secret soldiers of the Crown. When the sun is high and times are good, you don't exist. You live in the shadows, doing the jobs no Paladin of the Light will touch. You are assassins and heretics, monsters and murderers. And tonight, you are the Kingdom's last hope.
Welcome to the Army of the Dusk."