Sister. Sweetheart. ASSASSIN! Archer and Armstrong...and Mary-Maria?! Archer's beloved foster sister and world-class hitwoman-for-hire, Mary-Maria, takes center stage for the very first time in a high-stakes tale of hot-headed teenage temperament and tantalizing target practice! In search of her own origins, get ready to see the world through the eyes of Valiant's number one knife-wielding love interest - just as the world of Archer & Armstrong hurtles towards next month's colossal, issue #25 game-changer!