[ENT] Season 3, Episode 16: Doctor’s Orders
This one is sort of built on a mystery, but mostly it’s just supposed to be kind of spooky and examine Phlox’s character. It does an ok job of both.
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Read more at Memory Alpha
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Notes:

Phlox recalls what led to everyone being put to sleep. The Expanse is changing. There are new areas of space that are more dangerous.

Apparently it’s not so bad for Denobulans and the animals, and if T’Pol would be safe, this is definitely the scene where they would mention that…

He sees a zombi Hoshi, and then when he looks again, Hoshi is fine and in bed. This episode seems to be based on that line from a previous episode about Denobulans hallucinating when they’re stressed.

The area of space is growing faster than they thought. If they don’t go to warp the crew will have to be asleep for another 10 weeks

And T’Pol can’t remember how to do anything and for some reason doesn’t even touch anything. She says her emotions are messing with her.

Phlox saves everyone and once they’re out of the dangerous area, he starts waking people up. But then as he escorts T’Pol back to her quarters he finds that she’s asleep!
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