Constant mix of day and night shots, with dialog that further demonstrates the mismatches (i.e, saying "Good night" in broad daylight).
The news report on the radio describes a "blood strewn" room. Blood can be splashed or splattered but not, by definition,"strewn.
While the newlywed is being beaten in the shower, there is an extra sound of a blow to the body not correlated with the visual.
(at around 10 minutes, 35 seconds) When Dr. Anderson calls out from the door, someone (possibly a crew member) is seen behind him, from the right, peering out the door.