Ending to "Lose Now, Pay Later"

Trevor looked at what used to be his sister and trembled. She was sprawled out on the floor, her neck at an impossible angle. Dried blood crusted the front of her once purple shirt, signs of her earlier feeding frenzy. Blood dripped from her open mouth. Her eyes were listlessly staring at the ceiling above her, also coated with old and new blood. She was a mess. Trevor crouched down and gently closed her eyes. “I did it for the good of the people.” Trevor said with only the slightest tremble, “At least the ones who aren’t....... like you. I’m so sorry Deb. I loved you.” He then stood up determinedly, picking up a blood-spattered baseball bat and looked at his sister’s hideout. It was littered with bones, human bones, and cracked blood was seeping from every crack. The stench of rotting flesh filled the air. Trevor wrinkled his nose and looked at his sister one last time, tears stinging the corner of his eyes. He walked out, shutting the door on his last living family member.

Trevor was all alone in the world. There was no one left. All that remained were blood-hungry creatures that would stop at nothing for human flesh. He tried not to think of how suddenly the disease had taken the minds of his parents, slowly turning them into blood-sucking beasts.  He had cried into his sister’s shoulder when one night, his mom attacked his father. The fight was bloody and it raged for days, destroying the house from the inside out. Trevor and Deb had just run from the now collapsing house when they heard two piecing cries rise from the ruins. Not turning back once, Trevor and Deb moved from place to place, discovering that almost everyone in their town was affected. Always on the run, Trevor didn’t notice the slight changes in his sister’s behavior until too late. She had attacked him. He had only just beaten her off with a bat, the bat he now kept close to his side. She had run off, leaving him all alone in a world going insane. He set off to find her, determined that he could still get through to his sister. Nothing had gone as planned. He ended up killing her, his sister, his friend, and his last living relative. He would never forget her blood curdling screech as the bat bore down on her, he being the last face she saw. Was he a murderer? No, Trevor decided. He had not killed his sister. The disease had. He had just destroyed the thing that had taken over her body. He would get revenge and kill whatever had destroyed his family.

Having decided what to do next, Trevor walked away with only one question, what could have started the disease? Could it have anything to do with the SWOODIES and SLIMMERS? And would he be next?