Tasty Mystery Baskets of Clips

I'm running a blood and tissue analysis.
Computer, based on their speed and direction,
Dr Crusher.
Re-engage now.
I need to get back to the surface.
On our way, Commander.
or try to learn what it is that's got you,
- Susanna. - I'm right here, Geordi.
The others, Mendez, Brevelle,... they don't exist as humans any more,
- Whose shadow is that? - Please restate question.
Or even something we ingested. It could even be in the air itself.
I think you should stay here in sickbay.
You said I was fine.
But I'm not ashamed to tell you, I'm a little scared, you know?
Affirmative, with an increasing probability of error
However, all attempts to locate him on the surface have failed.
Understood. Run simulation.
He was spotted by a supply ship yesterday,
Its trajectory is moving directly into the planet's atmosphere.
I'll order warning beacons placed in orbit and on the surface,
Commander.
1.7 m. Now, can you extrapolate its shape and its position?
- Open a channel. - Open.
It's using Susanna's immune system to spread genetic instructions.
No subspace projections present. No Z-particle emissions present.
We are adjusting sensors to read his absorption spectrum,
I'll let you know if I come across anything.
It's all happening too fast. Computer, reverse simulation.
I should tell you that we didn't find tracks like that
Can you modify an emergency beacon to operate on UV?
- Hendrick to Cmdr Riker. - Go ahead.
You can feel it. They're here.
Fan out. Let's find her.
- You saw the footprints? - Yeah.
it's overpowering.