Improve the coherence of the given paragraph
Dennis approaches Katie from behind. When Dennis places Dennis 'hand on Katie's shoulder, Katie turns around and unleashes a demonic scream Dennis throws him to the other side of the room Dennis' injuring his leg.
Dennis approaches Katie from behind, but when he places his hand on her shoulder, Katie turns around and unleashes a demonic scream that throws him to the other side of the room, injuring his leg.