.. Finding Butcher's laboratory

The discontinuity looks interesting... Interact with it.

Nice find! Now, open the sliding door.

It is quite dark in there. But you can read the hotspots. Interact with the strange machine.

Talk to Otis until he tells you where the laboratory is ( The lab is behind the huge imposing door.) . Talk to Piscilla, after Otis tells you about the lab.

Okay. But your goal is to open the huge imposing door.

Maybe now would be a good time to start the engine?