What Happened to the Man?

The store was closed for the night when a man walked in and sat down with staff. The manager noticed that he looked different to other people who had been there before him. He went through all of his departmental areas but couldn't find the man. After looking at security footage, it showed no one else coming into or out of the store during this time. It then flipped from normal to black after 30 minutes - exactly where the man would have been standing. 'It's just not knowing what i saw,' says Mr Smith. "There are a lot of things that go on that don't have an explanation"