Blink

So much can change in the blink of an eye. Cars crash. Fires burn. Lives end. Then the world you knew before is gone, never to return. Who’s to say it was even there in the first place?
A man is being followed by something. He has no idea what it is- but every time he blinks it is there for half a second.
Other things start happening when he blinks. He ends up in places he's never been to, wearing clothes he's never seen. What happens when knives start appearing in his apartment, or when bloody stains appear, and a list of names written in his hand writing?
Can this being make him do the unthinkable to the ones he loves the most?