Sentence 1: Darlene's parents called to say they were coming home early. 
 Sentence 3: Darlene needed to warn her boyfriend but he did not have a phone 
 Sentence 4:  Darlene ran to her boyfriend's house, hoping to catch him 
 Sentence 5:  Her boyfriend beat her to her house and her parents were home 
 Given Sentence 2: Darlene's hated boyfriend was on his way over to the house.