argue with that.
How close are you to stopping this?
T'Pol and I have isolated a specific frequency of radiation
that disrupts the silicon matrix of the virus.
That sounds promising.
Unfortunately, the dosage required would be lethal.
There's got to be some kind of a trade-off--
a way to produce enough radiation
to slow down the virus without killing the patient.
That's what I'm working on.
Work faster.
We can stop what this virus is doing to them.
That's not why we're here.
We came to observe their response to the unexpected,
not to watch them suffer.
This is not the place
to be having this discussion.
I know where we can talk undisturbed.
[groaning softly] The sensations
in this host are different from the others.
I'm experiencing...
physical pain.
So am I.
Why should any species
have to endure this weakness?
Because the desire
to overcome it will spur them
to move beyond the limitations of the physical world.
Maybe that isn't true for all species.
It was true for us.
You can't be awake.
Not with that much sonambutril.
Our ancestors were physical beings.
What worked for us might not work for everyone.
Humans have different qualities.
Nothing I haven't seen before.
What do you have against this species?
What disturbs me most out the humans
is their capacity for violence.
Extraordinary. Klingons embrace violence.
The humans try to avoid it.
Humans say they avoid it, but their words don't ma...
We're being observed.
Ah, Captain, T'Pol--
I was just coming to see you. These are brain wave
readings of Commander Tucker and Ensign Sato.
What is the significance?
The patterns aren't human.
Did you know they had this capability?
He must've used Denobulan technology.
I see.
Are you responsible for what happened to my patients?
We had nothing to do with it.
We come here only to study
how physical species react to the unknown.
You can help by telling us
how you detected our presence.
That happens in less than
two percent of our missions.
Commander Tucker and Ensign Sato were sedated.
They shouldn't have been able to stand and talk.
It's been so long since we had physical form,
we weren't able to distinguish sleep from sedation.
We'll remember next time.
Is there anything you can do to help my patients?
We're here to observe. We can't interfere.
You're interfering with me!
Our subjects are human.
You're Denobulan.
You were inhabited a few hours ago.
An intriguing experience. I have no recollection of that.
Memories are simple to adjust.
You're going to "adjust" mine again, hmm?
So I won't remember a word of this encounter.
Or what you observed in the Decon Chamber.
If you have that ability, you must be able
to help my patients. We could.
But we won't.
Thank you for your help, Doctor.
No wonder you erase memories.
Your behavior is appalling.
According to what I read on the Doctor's medical PADD,
he's learned how to stop the infection.
I've seen seven other species develop the radiation cure.
But never in time.
Did we make First Contact with any of them?
Of course not.
Expending resources to attempt an impossible task
is not a sign of intelligence.
The Captain and Science Officer
have decisions to make.
We need to return to our original hosts.
For the radiation to destroy the virus
without killing the patient, it must be precisely focused.
The emitters in the Decon Chamber aren't suitable,
but the bio-scanner in Sick Bay is.
To move them from Decon to Sick Bay,
we'll need to expand
the quarantined area.
That won't be a problem.
We're going to make this work.
Ensign Sato's condition is deteriorating.
We need to hurry.
Engaging quarantine.
Reed to Bridge.
I confirm a positive seal.
Environmental systems are isolated.
Entering the quarantine zone.
She's going into oligemic shock.
Captain, she's dying.
[grunting]
Get her on the bio-scan bed.
She's stopped breathing.
Someone always dies.
[sighs]
Hoshi!
[flatline beeps on monitor]