Missing

I was running as fast as I could. I tripped over my feet and fell to the cold hard side walk. I looked back in horror. But, nothing was there. I hurried and got up to my feet. I started running again. Running out of air caused me to slow down. I ended up about two blocks from my best friend's house. I walk kinda fast towards her house, hoping no one was still following me. I walked up to her door out of breath. I did our secret knock: knock three times loud then two soft. She looked, like really confused why I was there. "Sadie...i-i r-really need to come i-in" I said looking behind me. "Chris? What's going on?!" Saidie said moving out of the way. Trying to catch my breath, "I don't know! Someone broke into the house...I Heard mom and dad scream...i-i ran into Isaac's room but he wasn't in there.... So panicked and ran and someone started running after me." I said falling into her arms crying. Sadie hugged me tight. "It's going to be alright...I promise. Here let me go wake up Dad and we can ca-" Sadie said, but was cut off mid sentence when there was aloud bang on the door. It caught us both by surprise and scared the living daylights out of me. I hurried and stood up and ran into Sadie's room and into her closet. I hurried wipped out my phone and called 911. " 911- what's your emergency?" A lady's voice came at the other end of the line..