The protagonist is seen to be Emily Grierson. Emily is going through a huge emotional because of the fact that her town is growing around her. She became depressed and very antisocial. The picture above shows her when her father past before she lost hold of herself. Because of her depression she is described as "she looked bloated, like a body long submerged in motionless water, and of that pallid hue.".
Same as the protagonist the antagonist is also Emily. She may have poisined her friend Homer Barron who ended up passing without notice, he just appear missing from the comunity. He was found dead in Emily's home after she passed. "What was left of him, rotted beneath what was left on the nightshirt, had become inextricable from the bed which he lay;"
The conflict of the story is person versus society, in other words emily versus her town. When a member of the board of elderman Colonel Sartoris comes to retrieve emilies tax money she continues to deny owing. Emily states "I don't owe taxes in Jefferson.". She is also always stalked by the towns people for being odd and never coming out of her house. The conflict at the end of the book happens in her house when they find Homer's body is an empty room.