I went back to the security camera. Biko-nu was whining again. Something was definitely in my house, and he was clearly terrified of it. I checked the house alarm, the outside cameras, the upstairs camera. I turned on all the lights. I switched back to the downstairs camera. There was Biko-nu, still cowering. I could only see his furry side as he crouched practically on top of the camera. Then I heard something.