Some experiments should never be conducted. Some portals should never be opened. The Welttïren research team believed they were on the brink of discovery-a gateway to another dimension. But what Samantha Grant unleashed in Lab 4 wasn't knowledge… it was a nightmare hungry for more. Something was watching from the other side. Something followed her back. Now, the darkness spreads within the lab and inside her own mind. The only way to stop it is to face it. But can she close the door before they break through?
