This review contains spoiler.

What happened to the twins is unfair and unfortunate. The kid is right. Everything was taken away from him in a matter of seconds. But how about the driver who hit him? I thought we'd see Han Bom in action and give the twins the justice they deserve. It's a good episode, nevertheless. I'm still clueless about many things. Why some ghosts can only stay for three days, and why some of them can't? How about the ones that look scary and want to harm Kijoo? The girl who was with Kijoo when he was young stayed for months, so why can't other ghosts stay that long?