When Miss Emily dies the whole town attends her funeral, some out of respect and others out of curiosity of what her house looks like.
Young man Homer Barron is introduced to Emily and the town believes him and Miss Emily are going to get married.
Miss Emily goes to the store to buy arsenic poisoning but doesn't give a reason. she doesn't tell anyone but it is going to be used to kill homer Barron. When the lady comes back with it she says its for rats.
After purchasing the arsenic, Miss Emily isolates herself in her house and is not seen again for many years.
After Miss Emily dies, the whole town goes to her house and they then reveal a room to which the door hasn't been opened in 40 years.
When they enter that room they discover the imprint from Homer Barron's dead body along with a strand of Miss Emily's grey hair revealing that she had been sleeping with his dead body.