Entity photographed in my basement — I did not put it there

This happened two nights ago and I am still not okay. I set up a trail camera in my basement after hearing dragging sounds for three weeks. I checked the footage this morning expecting to find a raccoon or a burst pipe. Instead, frame 847 shows a figure standing in the far corner facing the wall. Approximately 6 feet tall. Completely white — not wearing white, white. Like the colour had been removed from it. It was there for exactly one frame (the camera shoots every 3 seconds) and gone in the next. I have lived alone in this house for six years. The basement door was locked from the inside when I went down this morning. I don't know what to do. I'm posting the image now.