The Closed Ward

Here are seven people who woke up from an old closed ward. They are tied to the bed and a small box falls for an autopsy bed when the number of clocks reaches 00:00. Why are they trapped here and what will happen to them? So, there's 6 people who wake up in the dark, chained to pipes. Scared. It's gross and creepy, everyone's freaked out. They turn on the lights, find out it's actually a morgue, and there appears to be a 7th person. Well, now they all feel worse. Why are they all there, what is the point of all this? What do these people have in common? Why is there a massive red LED timer that keeps resetting every 15 minutes?