Finally , Bywaters attacks Percy with a knife , as the couple walk home from the theatre .
Edith 's fantasy - driven promises to leave Percy stir Bywaters to a frenzy ; he also resents the way Percy deprecates and even injures Edith .
Bywaters attacks Percy with a knife , as the couple walk home from the theatre .
Edith 's fantasy - driven promises to leave Percy stir Bywaters to a frenzy ; he also resents the way Percy deprecates and even injures Edith .