Corrected entry: Ripley has just seen Lambert and Parker dead, she has set the ship to destruct, so why does she go to the lower deck? The only reason is to show us, the viewers, Dallas and Brett still alive and cocooned and to show us the sticky secretion on the wall, which we see more of in "Aliens."
kh1616
6th Jan 2014
Correction: After setting the destruct sequence, Ripley realized that Jones, the cat, was being left behind. She went back to find him. That's when she discovered the two other crew members, although that scene had been cut in the original theatrical release.
raywest ★